PSYB51H3 Chapter Notes - Chapter 10: Sound Localization
Document Summary
Sound localization: sounds are processed in same place in ear no matter where it comes from, having 2 ears allows us to tell location, closer objects heard at one ear first (timing), intensity greater (louder) Interaural time difference (itd): diff in time btw sound getting to an ears: azimuth: angle of object relative to imaginary circle around us, i. e. horizontal plane. Largest itd is at extreme l/r (90 ) w/ delay of 640 microseconds: as we move further away from extremes delays are less, directly to the front and back, there are is no itd. Physiology of i t ds: medial superior olives (msos): relay station in brain stem, inputs from ears combine to detect itd. Itd detectors form connections in first few months of life: size of head is important for interpreting itds. Interaural level difference (ild): diff in intensity btw sound arriving at one ear: similar properties as itd.
