Lecture10_revised - Psychology 110 Biological Psychology...

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Psychology 110: Biological Psychology Lecture 10: Hearing and the vestibular system
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Recap of Lecture 9 we saw how four different types of peripheral receptor in the skin mediate the perception of touch. finally, we finished by looking at the main sensory pathways for temperature and pain, and saw how they consisted of both ascending and descending components. we saw how touch is represented in somatosensory cortex, with an overrepresentation of the lips, hands and feet, giving rise to the somatosensory homunculus. we saw how touch information is represented in higher cortical areas, where the emphasis is on maintaining the information in memory and manipulating the information.
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Outline of Lecture 10 we will look at the anatomy and functional properties of the ear, and how it permits auditory perception. we will look at the vestibular system and learn how it allows us to maintain accurate balance, and compensate for changes in head and body position.
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Importance of hearing Helen Keller “Blindness deprives you of contact with things; deafness deprives you of contact with people.” sound has a wide range of complexity, enabling human language. unlike visual stimuli it can go round obstacles, and it works as well in the dark as in the light.
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