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Sound:
Physics, Perception
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Characterizing:
Frequency (pitch), Loudness
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Timing
(sound source location; discriminating complex sounds)
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Weber-Fechner
law: perceptions are logarithmic; just noticeable
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differences
are proportional to the value (of loudness or pitch)
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Pathway:
cochlea – brainstem – cortex
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Ear:
finely engineered to pick up sound
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Parallel
processing of pitch, loudness, timing, (complex sounds)
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Higher
along pathway -> more complex processing.
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“Physiology
explains perception”: receptive fields, tuning curves,
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place
coding for pitch, loudness, sound source location. Similar to
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sensory
systems of vision, touch
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fMRI
of language processing
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Plasticity
(sensory experience or external manipulation).
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