PSYB51H3 Lecture Notes - Lecture 9: Human Echolocation, Brainstem, Conductive Hearing Loss
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Psyb51 lecture 9 hearing: physiology and psychoacoustics. Imagine you see boats: but the(cid:396)e(cid:859)s a thi(cid:272)k (cid:271)oat, so you (cid:272)a(cid:374) (cid:271)a(cid:396)ely see the(cid:373, o(cid:373)ethi(cid:374)g is happe(cid:374)i(cid:374)g i(cid:374) the lake (cid:449)ith the (cid:271)oats, (cid:271)ut you (cid:272)a(cid:374)(cid:859)t see, you can only see 2 buoys in the water. Imagine using the 2 buoys on the water you see to observe the patterns of the waves and understand what may be happening in that fog: what audition does sends vibrations so we can detect frequencies. Intensity: amount of sound energy falling on a unit area. The(cid:396)e is so (cid:373)u(cid:272)h (cid:448)i(cid:271)(cid:396)atio(cid:374) that it(cid:859)ll (cid:272)ause pai(cid:374) in the ears and possible damage them. It(cid:859)s a linear effect: spectrum: a representation of the relative energy present at each frequency, yellow graph horizontal axis. The function of hearing: http://www. youtube. com/watch?v=petrigtenoc, auditory transduction. Inner ear: fine changes in sound pressure are translated into neural signals, cochlea: oval/round window, three canals, snail-looking structure.
