Term
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Definition
| variations in air pressure that can be heard |
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Term
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Definition
| distance between compressed patches of air |
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Term
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Definition
Outer ear - pinna to tympanic membrane
middle ear - ossicles to oval window
inner ear - apparatus medial to oval window |
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Term
| Auditory pathway: sound wave to cortex |
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Definition
| sound wave - tympanic membrane - ossicles - oval window membrane - cochlea - auditory receptors in cochlea - brain stem neurons - Thalamus (MGN) - auditory cortex |
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Term
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Definition
- loud sounds trigger a neural response
ossicle muscles contract (tensor tympani and stapedius muscle)
- ossicles become more rigid
conduction of sound reduced
Purpose:
protect inner ear form loud sounds and sauration of inner ear receptors |
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Term
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Definition
| both neuron firing rate and number of activated neurons is used to encode sound intensity |
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