PSYB51H3 Lecture Notes - Neural Coding, Sine Wave, Vocal Tract
Document Summary
Saq: explain the temporal code of sound frequency. Auditory nerve fires at a certain part of the phase of a sound pressure wave. Scientific term: phase locking: fires whenever pressure wave goes one way or the other. Refractory period: there is a minimum time between aps cannot fire. Temporal coding limit volley principle: have diff neurons firing at the same phase but at different times diff cycles. Several neurons share coding and still see that there are aps that are phase locked across several neurons. Increment of frequencies of harmonic sounds: multiple integers of fundamental frequency. Harmonic sounds are something that are not uncommon, but are the sound properties of objects vibrating in a certain way. On the right side, see the curve that adds all the frequencies together: like a sine wave but is leaning leftwards this is because many sine waves were added together. Some instruments do not have fundamental frequencies.
