https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/sight-vision/v/photoreceptors-rods-cones 2022-11-16T04:22:43.7414897Z Photoreceptors (rods vs cones) Rods and cones are two types of photoreceptors in the eye. Both are specialized nerves that convert light into neural impulses, but they differ in number, location, and function. Rods are more numerous, located in the periphery of the eye, and good for detecting light in general. Cones are concentrated near the fovea, responsible for color vision, and able to adapt quickly to changes in light. Ronald Sahyouni video https://cdn.kastatic.org/googleusercontent/AhBJTHAt8_3xVy6NrpYLZfbi3sx5yj95C8cQ7QNWNG2AJ6LGijLnRLlHmyI5z_dItZGxA7eyWJhXDRkkRZC1z7VL Photoreceptors (rods vs cones) Rods and cones are two types of photoreceptors in the eye. Both are specialized nerves that convert light into neural impulses, but they differ in number, location, and function. Rods are more numerous, located in the periphery of the eye, and good for detecting light in general. Cones are concentrated near the fovea, responsible for color vision, and able to adapt quickly to changes in light. https://cdn.kastatic.org/ka-youtube-converted/_ElAuQyw4uA.mp4/_ElAuQyw4uA.mp4 306 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/sight-vision/v/photoreceptor-distribution-fovea 2024-02-09T21:30:53.441494697Z Photoreceptor distribution in the fovea The human eye has a unique layout of rods and cones. Rods, mostly found in the eye's periphery, detect light and dark. Cones, concentrated in the fovea, recognize color. The fovea's design allows light to directly hit cones, enhancing resolution. The blind spot lacks photoreceptors as the optic nerve exits here. Ronald Sahyouni video https://cdn.kastatic.org/googleusercontent/-6ookXxDFrOL6RQsp_Rj1tv6BeF_Rd-l6T07rZjWnHB1l8NMjIER6LwpxupbTf-LZrGNb-dvf9Uf9fw6VFvNEiAZkw Photoreceptor distribution in the fovea The human eye has a unique layout of rods and cones. Rods, mostly found in the eye's periphery, detect light and dark. Cones, concentrated in the fovea, recognize color. The fovea's design allows light to directly hit cones, enhancing resolution. The blind spot lacks photoreceptors as the optic nerve exits here. https://cdn.kastatic.org/ka-youtube-converted/UXIfzc1UH-g.mp4/UXIfzc1UH-g.mp4 343 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/sound-audition-topic/v/auditory-structure-part-1 2024-02-09T21:30:53.441494697Z Auditory structure - part 1 Our sense of sound, or audition, relies on sound waves and hair cells in the cochlea. When sound waves enter the ear, they cause the eardrum and tiny bones to vibrate. These vibrations push fluid in the cochlea, stimulating hair cells to send signals to the brain. This process lets us interpret sound. Ronald Sahyouni video https://cdn.kastatic.org/googleusercontent/3Gcj3CX-g09CelZ9UmPHZrNbQoetd5GA-GcYI-TYHOnLgPpPL1k5o_hKYLWbhej24bOg01Ss9-if_1iYMo4wTa_9 Auditory structure - part 1 Our sense of sound, or audition, relies on sound waves and hair cells in the cochlea. When sound waves enter the ear, they cause the eardrum and tiny bones to vibrate. These vibrations push fluid in the cochlea, stimulating hair cells to send signals to the brain. This process lets us interpret sound. https://cdn.kastatic.org/ka-youtube-converted/6GB_kcdVMQo.mp4/6GB_kcdVMQo.mp4 687 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/sensory-perception-topic/v/somatosensation-1 2024-02-09T21:30:53.441494697Z Somatosensation Somatosensation helps us understand our environment. It involves thermoception (temperature), mechanoception (pressure), nociception (pain), and proprioception (body position). Intensity is determined by neuron firing speed, while timing and location are encoded by different neuron types and dermatomes respectively. This knowledge is crucial for medical students studying sensory systems. Ronald Sahyouni video https://cdn.kastatic.org/googleusercontent/sKzcc7JLoxkmppfnwwtlJ5Z1T_qbXqzw1x_OHh7q-ZLXIcthM0bqA60Q-H-aelxpqO6EnEkbD7sy8ewocvGhJ7aZ Somatosensation Somatosensation helps us understand our environment. It involves thermoception (temperature), mechanoception (pressure), nociception (pain), and proprioception (body position). Intensity is determined by neuron firing speed, while timing and location are encoded by different neuron types and dermatomes respectively. This knowledge is crucial for medical students studying sensory systems. https://cdn.kastatic.org/ka-youtube-converted/FssCS9RhFt0.mp4/FssCS9RhFt0.mp4 464 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/human-anatomy-and-physiology/integumentary-system-introduction/v/pain-and-temperature-1 2024-02-09T21:30:53.441494697Z Pain and temperature Our bodies sense pain and temperature through a special receptor called TrpV1. This receptor, found in cells all over our bodies, changes shape with heat or pain signals. It also reacts to capsaicin, the spicy molecule in jalapenos. These signals are sent to our brain through fast, medium, and slow nerve fibers. Ronald Sahyouni video https://cdn.kastatic.org/googleusercontent/58hxEyNWzD3Bf1gbPVKjyP1OScpkwUp_JGP5K1yyG_6CEM5NKrL2AIKlwe9qcYoxm-A-m2Osj81s-TB1R3QHWhY Pain and temperature Our bodies sense pain and temperature through a special receptor called TrpV1. This receptor, found in cells all over our bodies, changes shape with heat or pain signals. It also reacts to capsaicin, the spicy molecule in jalapenos. These signals are sent to our brain through fast, medium, and slow nerve fibers. https://cdn.kastatic.org/ka-youtube-converted/D-oAsFIHqbY.mp4/D-oAsFIHqbY.mp4 562 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/taste-gustation-and-smell-olfaction-topic/v/olfaction-structure-and-function 2024-02-09T21:30:53.441494697Z Olfaction - structure and function Our sense of smell, or olfaction, plays a key role in enriching our everyday lives and enhancing our taste experiences. When we eat, molecules from the food reach our olfactory epithelium, a special area in the nose, and bind to receptors on olfactory sensory cells. These cells then send signals to the brain, allowing us to perceive the flavor. When our sense of smell is impaired, such as during a cold, our sense of taste is also affected. Ronald Sahyouni video https://cdn.kastatic.org/googleusercontent/YjJEuzLqlhBKC6UBSPu53-tBlx_C7cE4GfrX04sX2xyagAXDRQR0zUwKrMd9wHPzIqIBruDhUjNcFlwEbrFGrK-_ Olfaction - structure and function Our sense of smell, or olfaction, plays a key role in enriching our everyday lives and enhancing our taste experiences. When we eat, molecules from the food reach our olfactory epithelium, a special area in the nose, and bind to receptors on olfactory sensory cells. These cells then send signals to the brain, allowing us to perceive the flavor. When our sense of smell is impaired, such as during a cold, our sense of taste is also affected. https://cdn.kastatic.org/ka-youtube-converted/5-McqAO8_Qw.mp4/5-McqAO8_Qw.mp4 766 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/taste-gustation-and-smell-olfaction-topic/v/gustation-structure-and-function 2024-02-09T21:30:53.441494697Z Gustation - structure and function Our tongue has taste buds that detect five main tastes: bitter, salty, sweet, sour, and umami. Each taste bud contains cells for every taste, and they're mostly found at the front of the tongue. Each cell sends signals to a specific part of the brain, creating a unique taste experience. This process is called the labelled lines model. Ronald Sahyouni video https://cdn.kastatic.org/googleusercontent/0Y_IEVrDWtFqjFlkglP2FzGcccTxR66_HqgebOCeNRXQEoVKTh3eyjoRuF-rMlhfXPJal5eniX4jiM85cjTeTLfnPA Gustation - structure and function Our tongue has taste buds that detect five main tastes: bitter, salty, sweet, sour, and umami. Each taste bud contains cells for every taste, and they're mostly found at the front of the tongue. Each cell sends signals to a specific part of the brain, creating a unique taste experience. This process is called the labelled lines model. https://cdn.kastatic.org/ka-youtube-converted/-vp1X7_u3KU.mp4/-vp1X7_u3KU.mp4 751 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/drug-abuse-and-drug-addictions/v/overview-of-psychoactive-drugs 2024-02-09T21:30:53.441494697Z Overview of psychoactive drugs Psychoactive drugs, altering consciousness and perceptions, fall into four groups: depressants, stimulants, hallucinogens, and opiates. Depressants slow brain activity, while stimulants increase alertness. Hallucinogens distort perceptions and opiates, like depressants, slow nervous system functions but also reduce pain. The classification isn't perfect, with some drugs fitting multiple categories. Brooke Miller video https://cdn.kastatic.org/googleusercontent/ygdHKKy--Vn3ltXQebj9UMhilZMymYvKDlPAyKJqQVBFkWRQ6A5UVpZEcazptVAWxxTAV6brQtDyfWnDBaTr8IJKTA Overview of psychoactive drugs Psychoactive drugs, altering consciousness and perceptions, fall into four groups: depressants, stimulants, hallucinogens, and opiates. Depressants slow brain activity, while stimulants increase alertness. Hallucinogens distort perceptions and opiates, like depressants, slow nervous system functions but also reduce pain. The classification isn't perfect, with some drugs fitting multiple categories. https://cdn.kastatic.org/ka-youtube-converted/icD3l5bhhKY.mp4/icD3l5bhhKY.mp4 428 Sensory receptors and effects of drugs https://www.khanacademy.org/science/ka-biology-grade-12/x406cf103e0507862:in-in-human-health-and-disease/x406cf103e0507862:in-in-addiction-and-dependence/a/commonly-abused-drugs-review 2021-04-29T07:49:40Z Commonly abused drugs review Heroin, cocaine, morphine, barbiturates, nicotine, tobacco article https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/drug-abuse-and-drug-addictions/a/drug-abuse-and-drug-addiction 2021-05-17T04:47:29Z Drug abuse and drug addiction This article explains the concepts of drug use and dependence. article https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/drug-abuse-and-drug-addictions/v/tolerance-and-withdrawal 2024-02-09T21:30:53.441494697Z Tolerance and withdrawal The video explores how drugs impact our brain's reward circuit, leading to tolerance and addiction. It explains how prolonged dopamine stimulation from drug use can alter brain chemistry, causing the brain to shut down some receptors, resulting in tolerance. Without the drug, withdrawal symptoms like depression and anxiety can occur. Over time, the brain can adjust to the absence of drugs. Carole Yue video https://cdn.kastatic.org/googleusercontent/D68KpzMPuVrskUku9XKFYeGCqvPVAsbRi0vMv0QtUaig9GSBPDa8yYh_mcly-QsN2yr42UQM-yDxxo8CN-yAcTM Tolerance and withdrawal The video explores how drugs impact our brain's reward circuit, leading to tolerance and addiction. It explains how prolonged dopamine stimulation from drug use can alter brain chemistry, causing the brain to shut down some receptors, resulting in tolerance. Without the drug, withdrawal symptoms like depression and anxiety can occur. Over time, the brain can adjust to the absence of drugs. https://cdn.kastatic.org/ka-youtube-converted/3vKLU5_Hgco.mp4/3vKLU5_Hgco.mp4 333 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/drug-abuse-and-drug-addictions/v/the-development-of-substance-use-why-do-people-use-legal-and-illegal-substances 2020-07-15T21:03:20Z The development of substance use - Why do people use legal and illegal substances? Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Brooke Miller video https://cdn.kastatic.org/googleusercontent/ogDkWhdIkAwlcQ0lPnI9XXEPAm10SDvAhI9IevXui3olkxPydx5PnAXtV_WfUJlqWs2NPBcVNKcDYZ3nySxotVU8 The development of substance use - Why do people use legal and illegal substances? Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/0nKP1FdSzEg.mp4/0nKP1FdSzEg.mp4 629 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/parkinsons-disease/v/what-is-parkinsons-disease 2020-12-28T16:56:56Z What is Parkinson's disease? Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Emma Giles video https://cdn.kastatic.org/googleusercontent/IZS82Ts42J2C9Z63K5gJhoo-66f05s9Jhkm6y_zB8cOZ4feFGHcDLu7Nyd6AX5gIBfJ__5pg5hHYbCNqSbTcb29L What is Parkinson's disease? Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/3n8UjH9h_8I.mp4/3n8UjH9h_8I.mp4 534 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/parkinsons-disease/a/what-is-parkinsons-disease 2021-04-29T07:55:49Z What is Parkinson's disease? article https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/parkinsons-disease/v/movement-signs-and-symptoms-of-parkinsons-disease 2020-12-10T19:46:23Z Movement signs and symptoms of Parkinson's disease Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Emma Giles video https://cdn.kastatic.org/googleusercontent/N8_AKgR4nZAElJqORd-GQOL70Krfpa6-a75DJkbx3ovZx_aVo5kd9ZNnoqo64xtgtUPOsIaRnJFOZHerkdFiS76f Movement signs and symptoms of Parkinson's disease Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/4qdD4Ny34cc.mp4/4qdD4Ny34cc.mp4 626 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/nervous-system-and-sensory-infor/parkinsons-disease/v/putting-it-all-together-pathophysiology-of-parkinsons-disease 2020-07-15T21:03:14Z Putting it all together - Pathophysiology of Parkinson's disease Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Emma Giles video https://cdn.kastatic.org/googleusercontent/D4TsvpqKY-RMhSJQJjKxDpSU5kMsteTU81pdfj1tgNJi-b8hy_vEE9Xszjvsp9JmwuIo9t_-nra5FsVaUZ6zAwtVPw Putting it all together - Pathophysiology of Parkinson's disease Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/8mvUDiBQbjg.mp4/8mvUDiBQbjg.mp4 361 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/infectious-diseases/x6e556f83:bacteria-and-viruses/v/bacterial-meningitis 2020-06-23T07:22:40Z Bacterial meningitis Dr. Charles Prober discusses prudent prescribing of antibiotics in the context of bacterial meningitis with 4th year medical student Morgan Theis Sal Khan video https://cdn.kastatic.org/googleusercontent/fc6N8m_pWAUZcEJQFY-Z5EqBqeUFDr_crrwjLmmQPxNtJfYkycX9uC5SGTk0NfRAWZ2Avbk2414n5pUwGxdjIPbdoA Bacterial meningitis Dr. Charles Prober discusses prudent prescribing of antibiotics in the context of bacterial meningitis with 4th year medical student Morgan Theis https://cdn.kastatic.org/ka-youtube-converted/CnXuSCaCNBo.mp4/CnXuSCaCNBo.mp4 737 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/circulatory-system-diseases/stroke/v/what-is-a-stroke 2020-07-15T21:03:22Z What is a stroke? Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Vishal Punwani video https://cdn.kastatic.org/googleusercontent/Rw1TY_PhgHgclljyV84ZZaAC-oPHrXzBwUBLnB9GIn9tt--kgk9Rw0bqDKqqfQopf85gaNoYdPdmTnxSH4vOHEem What is a stroke? Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/QIAI6KOwKII.mp4/QIAI6KOwKII.mp4 688 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/circulatory-system-diseases/stroke/a/what-is-a-stroke 2021-04-29T07:52:17Z What is a stroke? article https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/dementia-delirium-alzheimers/v/what-are-dementia-and-alzheimers 2020-07-15T21:03:11Z What are dementia and Alzheimer's Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Tanner Marshall video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw What are dementia and Alzheimer's Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/xUSpHmvW14c.mp4/xUSpHmvW14c.mp4 283 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/dementia-delirium-alzheimers/a/dementia-and-delirium-including-alzheimers 2021-04-29T08:00:54Z Dementia and Delirium, including Alzheimer’s article https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/dementia-delirium-alzheimers/v/alzheimers-disease-plaques-and-tangles 2020-07-15T21:03:22Z Alzheimer's disease: Plaques and tangles Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Tanner Marshall video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Alzheimer's disease: Plaques and tangles Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/kx5LBj6P-0E.mp4/kx5LBj6P-0E.mp4 303 Sensory receptors and effects of drugs https://www.khanacademy.org/science/health-and-medicine/executive-systems-of-the-brain/dementia-delirium-alzheimers/v/treatment-of-dementia-and-alzheimers-disease 2020-07-15T21:03:19Z Treatment of dementia and Alzheimer's disease Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Tanner Marshall video https://cdn.kastatic.org/googleusercontent/ZCdwTudJg6e6n-P2gsaUborP4izvMsGo71pvEVlX9dNYWcLXcP7VHkWpn2grt4TUP1KoJLQP9NswyHBuBLSFTBw Treatment of dementia and Alzheimer's disease Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/durV0mnzPo4.mp4/durV0mnzPo4.mp4 344 Sensory receptors and effects of drugs https://www.khanacademy.org/science/grade-12-biology-snc-aligned/xa8ba3a087f1f5288:nervous-system/xa8ba3a087f1f5288:sensory-receptors-and-effects-of-drugs/v/modern-ways-of-studying-the-brain 2023-08-17T23:33:36.770424498Z Modern ways of studying the brain This video covers various methods of studying the brain, including structural techniques like CAT scans and MRIs, functional methods like EEG and MEG, and combined approaches like FMRI and PET scans. It provides an understanding of both brain structure and function. Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. video https://cdn.kastatic.org/googleusercontent/43IRYXdYccVsNoefDi4DRfH4LnOZVglswGgygg4GDu6c8ro7mh4rlQM5eQds2_ySU3oEkJCKsSdKNbBXqqz92PU Modern ways of studying the brain This video covers various methods of studying the brain, including structural techniques like CAT scans and MRIs, functional methods like EEG and MEG, and combined approaches like FMRI and PET scans. It provides an understanding of both brain structure and function. Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/hCFtl4npukU.mp4/hCFtl4npukU.mp4 318 Sensory receptors and effects of drugs https://www.khanacademy.org/science/grade-12-biology-snc-aligned/xa8ba3a087f1f5288:nervous-system/xa8ba3a087f1f5288:sensory-receptors-and-effects-of-drugs/a/magnetic-resonance-imaging-mri 2021-05-25T21:59:58Z Magnetic resonance imaging (MRI) article https://www.khanacademy.org/science/health-and-medicine/circulatory-system-diseases/x6e556f83:stroke-management/v/diagnosing-strokes-with-imaging-ct-mri-and-angiography 2020-07-15T21:03:18Z Diagnosing strokes with imaging CT, MRI, and Angiography Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. Vishal Punwani video https://cdn.kastatic.org/googleusercontent/RBf8nBAHxf2ZlU5wgPzPm4SvkB6P1twNstSa0Gm5j4FlyhiblOG9YC0phIn-OhBvfsAQGOf8T9TJK2EE0Xxtx1V3 Diagnosing strokes with imaging CT, MRI, and Angiography Visit us (http://www.khanacademy.org/science/healthcare-and-medicine) for health and medicine content or (http://www.khanacademy.org/test-prep/mcat) for MCAT related content. These videos do not provide medical advice and are for informational purposes only. The videos are not intended to be a substitute for professional medical advice, diagnosis or treatment. Always seek the advice of a qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or seen in any Khan Academy video. https://cdn.kastatic.org/ka-youtube-converted/xC55TgPmfZ0.mp4/xC55TgPmfZ0.mp4 570 Sensory receptors and effects of drugs