PSYB51H3 Lecture Notes - Lecture 10: Vocal Folds, Formant, Absolute Pitch
Document Summary
Mechanically stimulate the organ of corti. through vibrations of the tectorial membrance induces shearing of the hair cells. Hair cells are brushed in one or several directions. Depending on the direction , hair cells will response and stimulate the an fibers. Lots of action potential and then dies off. repeats this pattern. When u look at the pattern of this neuron, this signal of intermittent bursts carries information of the frequency. ~ looking at a single hair cells tells the brain about the frequency. But only up to certain point up to 1000hz because hair cells cannot fire much faster than that. The neuron has to build up its resting potential. Another problem: neurons can only be so much accurate. Pythogaras: if u dissect a string at systematic intervals, u get certain increases in tones that sound good. Music in avery specific range, 25- 4500 hz not much higher than that. That is much less what we can actually hear.
