PSY280H1 Lecture Notes - Lecture 8: Outer Ear, Tensor Tympani Muscle, Inferior Colliculus
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PSY280H1 Full Course Notes
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Corresponds to loudness: frequency: the number of times per second that a pattern of pressure change repeats measured in hz (cycles/s) Corresponds to pitch: sound waves travel faster in dense mediums (e. g. water vs air) Inferior colliculus: a midbrain nucleus in the auditory pathway. Hearing loss: cochlear implants: tiny flexible coils with miniature electrode contacts, tiny microphone transmits radio signals to recover on scalp and signals activate minute electros at appropriate positions along cochlear implant. Sound localization: two ears are critical for determining auditory locations, azimuth(like horopter); the angle of the sound source on horizon relative to the point in the center of the head between. Interneural time differences: difference in the time between a sound arriving at one ear vs the other the ears (measured in degrees: max 1td is at 90 degrees. Neural basis: medial superior olive: a relay station in the brainstem where inputs from both eats contribute to detection of itds.
