People can perceive sound frequency {pitch, sound}|.
frequency
People can hear ten frequency octaves, from 20 Hz to 20,000 Hz. Lowest frequencies, 20 Hz to 30 Hz, are also highest vibrations detectable by touch.
Shortest hair-cell hair lengths detect highest frequencies. High-frequency tones vibrate basilar-membrane stiff narrow end, far from oval window. Above 3000 Hz, higher hearing neurons respond to frequency, tone pattern, or intensity range.
Low-frequency tones activate all hair cells, with greater activity near oval window and its long-hair hair cells.
sensitivity
People are most sensitive at frequency 1800 Hz.
neuron firing
Maximum neuron firing rate is 800 Hz. After sound frequency and firing rate reach 800 Hz, firing rate drops abruptly, and more than one neuron carries sound-frequency information. After sound frequency and firing rate reach 1600 Hz, firing rate drops abruptly.
Consciousness>Consciousness>Sense>Hearing>Physiology>Frequency
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Date Modified: 2022.0224