Lecture 6- Hearing Perception Flashcards
E.C. Cherry experiment
implies that memory processes are involved with hearing perception
- implies there is a constructive component to perception
Dichotic listening task
E. Colin Cherry (1953): headphones, play 1 message in left ear while playing another in right ear
Anne M. Treisman experiment
(1960): perception is a CONSTRUCTIVE process that relies on memory AND experience
Neville Morray experiment
Subject will respond to own name even though the signal/noise ration is low, as at a cocktail party
cocktail party effect
you tend to notice your own name even in a crowded room
distal stimulus
anything that can cause the nervous system to react in some way
proximal stimulus
initial pattern of nervous system reaction
what order does sound come through
- pinnae 2. ear canal 3. tympanic membrane
- ossicular chain 5. fluid in cochlea 6. hair cells bend 7. neural transduction
principle of good proximity
sounds arriving close together tend to be grouped
principle of similarity
sounds with similar timbre and frequency tend to be grouped
principle of good continuation
sounds that follow a “regular pitch contour” tend to be grouped
principle of closure
interrupted auditory stimuli tend to be perceived as continuous when this makes logical sense
principle of common fate
sounds with synchronous rhythm patterns tend to be grouped (change length, volume, stress to emphasize meaning)
principle of Pragnanz (simplicity)
frequencies with simple harmonic ratios tend to be grouped
Wernickes (receptive) aphasia
ability to grasp the meaning of spoken words and sentences is impaired, while the ease of producing connected speech is not very effective
- profound language deficits (comprehension)
- unaware that they cant understand speech and that they cant be understood
