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Mechanoreceptors. Respond to tactile stimuli, sound, vibrations, pressure Produce graded response initially Can be “phasic” or “tonic” receptors Typically exhibit “adaptation” Examples: Pacinian corpuscle; statocysts; inner/middle ear of vertebrates. Pacinian Corpuscle.
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Mechanoreceptors • Respond to tactile stimuli, sound, vibrations, pressure • Produce graded response initially • Can be “phasic” or “tonic” receptors • Typically exhibit “adaptation” • Examples: Pacinian corpuscle; statocysts; inner/middle ear of vertebrates
Vertebrate Ear: Phonoreception Pinnacle of evolution as far as sound reception among animals is concerned Detect waves that exhibit certain frequencies and amplitude (nearby and at a distance) Involve external, middle and inner ear Two principle organs involved: Cochlea Organ of Corti