PSYA01H3 Lecture Notes - Lecture 14: Basal Ganglia, Cochlear Implant, Inferior Colliculus
Document Summary
The human ear detect sound waves to transform that information into neural signals. the sound waves have two important characteristics: Frequency it refers to wavelength and the number of cycles a sound wave travels per second. Pitch is the perceptual experience of sound wave frequencies. E. g. high frequency sounds have short wavelengths and high pitch. E. g. low frequency sounds have long wavelengths and low pitch. Amplitude it determines its loudness: ( the higher the louder) ** humans can hear from 20hz to 20 000 hz*** The human ear is divided into outer, middle and inner regions. The most noticeable part is the pinna outer region that helps channel sound waves to the ear and allows you to determine the source or location of the sound. Auditory canal extends from the pinna to the eardrum, causing it to vibrate. The middle ear is consisted of three tiny movable bones ossicles (hammer, anvil and stirrup)
