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Sensory System Dr. Marc Gotkine Submitted 2008 to

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How to drink a cup of coffee safely!

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Stimulus

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Stimulus Response

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Stimulus Response Consciousness HOT !!!

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Stimulus Response Consciousness HOT !!! Expensive ! -

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Monosynaptic reflex

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Stimulus Consciousness Detection Transmission Perception HOT !!!

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Stimulus Consciousness Detection Transmission Perception HOT !!!

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Stimulus Consciousness Detection Perception rainbow Transmission

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Stimulus Consciousness Detection Transmission Perception music

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Stimulus Consciousness Detection Transmission Perception chocolate

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Stimulus Consciousness Detection Transmission Perception Perfume

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Processing <ul><li>Grey Matter </li></ul><ul><ul><li>Cell bodies & Synapses = Area of processing </li></ul></ul><ul><ul><li>More processing = larger area of grey matter </li></ul></ul>Stimulus Consciousness Detection Transmission Perception

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<ul><li>White Matter </li></ul><ul><ul><li>Myelinated Axons = Transmission pathway </li></ul></ul><ul><ul><li>No processing within white matter </li></ul></ul><ul><ul><li>Can stop at grey-matter “stations” to process information on the way </li></ul></ul>Stimulus Consciousness Detection Transmission Perception

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Transmission

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Processing Stimulus Consciousness Detection Transmission Perception

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Processing עיבוד Stimulus Consciousness Detection Transmission Perception

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Processing Stimulus Consciousness Detection Transmission Perception

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Processing עיבוד Stimulus Consciousness Detection Transmission Perception

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Processing Stimulus Consciousness Detection Transmission Perception

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Processing עיבוד Stimulus Consciousness Detection Transmission Perception

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Pacinian corpuscle Pressure Vibration

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Meissner's corpuscle Light touch

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<ul><li>Nociceptors (Pain receptors) </li></ul><ul><ul><li>Free nerve endings </li></ul></ul><ul><ul><li>Temperature </li></ul></ul><ul><ul><li>Mechanical stimuli </li></ul></ul><ul><ul><li>Polymodality </li></ul></ul>

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Homonculus (point-to-point mapping)

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Vision

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Sphincter pupillae muscle Pathways involved in the pupillary light reflex

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Stimulus Response Consciousness -

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A man with abnormal hand-movements only when he looks at his hand Case

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Pseudoathetosis http://www.asktheneurologist.com/movement-disorders-lecture.html

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Pseudoathetosis - deciding on the basis of faulty input Due to a disturbance in the pathway which sense where the joints are in space Sensory disturbances can cause motor problems

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<ul><li>THANKS </li></ul>