Sensory system

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Information about Sensory system
Health & Medicine

Published on May 1, 2008

Author: NeurologyGuru

Source: slideshare.net

Description

The sensory system is the part of the nervous system that detects ,transfers and processes stimuli from the environment

http://www.asktheneurologist.com/Sensory-System.html

Sensory System Dr. Marc Gotkine Submitted 2008 to

 

How to drink a cup of coffee safely!

Stimulus

Stimulus Response

Stimulus Response Consciousness HOT !!!

Stimulus Response Consciousness HOT !!! Expensive ! -

Monosynaptic reflex

Stimulus Consciousness Detection Transmission Perception HOT !!!

Stimulus Consciousness Detection Transmission Perception HOT !!!

Stimulus Consciousness Detection Perception rainbow Transmission

Stimulus Consciousness Detection Transmission Perception music

Stimulus Consciousness Detection Transmission Perception chocolate

Stimulus Consciousness Detection Transmission Perception Perfume

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

Grey Matter

Cell bodies & Synapses = Area of processing

More processing = larger area of grey matter

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

White Matter

Myelinated Axons = Transmission pathway

No processing within white matter

Can stop at grey-matter “stations” to process information on the way

Transmission

Processing Stimulus Consciousness Detection Transmission Perception

Processing עיבוד Stimulus Consciousness Detection Transmission Perception

Processing Stimulus Consciousness Detection Transmission Perception

Processing עיבוד Stimulus Consciousness Detection Transmission Perception

Processing Stimulus Consciousness Detection Transmission Perception

Processing עיבוד Stimulus Consciousness Detection Transmission Perception

 

 

 

Pacinian corpuscle Pressure Vibration

Meissner's corpuscle Light touch

Nociceptors (Pain receptors) Free nerve endings Temperature Mechanical stimuli Polymodality

Nociceptors (Pain receptors)

Free nerve endings

Temperature

Mechanical stimuli

Polymodality

 

 

 

Homonculus (point-to-point mapping)

Vision

 

 

 

 

 

 

Sphincter pupillae muscle Pathways involved in the pupillary light reflex

 

 

 

 

 

 

 

 

 

 

 

 

 

Stimulus Response Consciousness -

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

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

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

THANKS

THANKS

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