PSYB65H3 Chapter Notes - Chapter 8: Auditory Cortex, Medial Geniculate Nucleus, Inferior Colliculus
Document Summary
Language production was one of the first cognitive abilities to be localized in the brain. Frequency rate of vibration / the number of wave cycles completed per unit of time. Measured in hertz (hz) cycles / second. Human ear can perceive vibrations between 20-20,000 hz. Maximally sensitive to sounds between 1000 and 4000 hz (human voice) Range of frequency that an animal perceives varies widely across species. Loudness corresponds to the amplitude (intensity) of the sound wave. Waves of different amplitudes differ in the degree to which the high point (condensation of air) and the low point (rarefaction of air) of the wave differ from each other. Measured in decibels (db) sound pressure of a source when compared to a standard intensity of 10-12 watts. Fourier analysis a mathematical process in which complicated sounds are broken down into simple component waves.
