Signal transduction, in a sensory processing sense, is the conversion of energy into a neural signal. It occurs in receptor cells located in sensory organs. These sensory organs include the eyes and the ears. In the cochlea (inner ear) hair cells located in the basilar membrane have stereocilia, which are hair-like structures that touch the tectorial membrane. Sound vibration causes hair displacement and opens mechanically gated ion channels, which causes the cells to depolarize and release neurotransmitters. These cells do not fire action potentials.
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