The Sensory system reference article from the English Wikipedia on 24-Jul-2004
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Sensory system

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(See also sense)

A sensory system is a part of the nervous system that consists of sensory receptors, neural pathways, and those parts of the brain responsible for processing the information. Specific sensory systems are those for somatic sensation, vision, olfaction, taste and hearing.

Functions

Coding

Sensory systems code for four aspects of a stimulus; type (modality), intensity, location, and duration.

Modality

There are many stimulus modalities; temperature, taste, sound, pressure.

The type of sensory receptor activated by a stimulus plays the primary role in coding the stimulus modality.

Human sensory system

Human receptors are: All four types of sensors contain protein channels.

Mechanosensors:

Thermoreceptor: Chemosensors: Two main classes
  1. Direct: eg blood sensors, taste bud
  2. Distance: eg antennaee, olfactory receptor neuron

Photosensor in eyes:
Nervous system - Sensory system Edit
Visual system - Auditory system - Olfactory system - Gustatory system - Somatosensory system