PSY 323 test 1 - 1 What elements in the auditory chain are...

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1. What elements in the auditory chain are likely to be damaged by exposure to intense sounds? a. Tympanic membrane b. Middle ear muscles c. Basilar membrane d. Hair cells e. Cortical and sub-cortical neurons 2. A vacuum is devoid of any air particles. Suppose you turned on the stereo in a vacuum. What would you expect to happen? a. You would hear nothing b. The sound would be perceived as very loud, even at very low volumes c. you could only hear the fundamental frequency of a periodic sound d. you could only hear the frequencies above 4000Hz 3. Which of the following statements is true about white noise? a. White noise is aperiodic b. White noise is usually periodic c. White noise has a distinct pitch determined by its lowest frequency d. White noise can’t be created by adding pure tones together 4. If two sounds differ by 30dB, then one sound is times more intense then in other a. 1000 5. Functional magnetic resonance imaging (fMRI) most directly measures: a. Blood oxygen levels b. the occurrence of action potentials c. the occurrence of grade potentials d. the concentration of a radioactive marker 6. If equal intensity 300, 550, 800, 1050, and 1500 Hz tones are play simultaneously, then the pitch (i.e. the sine wage frequency) to which it would sound the most similar would be a. 250Hz 7. Weber’s Law? a. The Just detectable Intensity Difference is proportional to intensity b. The just-discriminable intensity difference stays constant with intensity c. Perceived loudness is proportional to the intensity d. The pitch of a periodic sound is usually determined by the lowest frequency 8. Movements of the basilar membrane? a. For high-frequency tones, the max displacement occurs near the oval window b. Sound produces traveling waves start from the stapes and of the basilar membrane c. The vibration pattern converts different sound frequency into activity at different locations along the basilar membrane 9. Sound shadow cast by the head assists in the localization of frequency sounds by creating differences between the ears a. High, intensity 10. The min possible time delay between signals arriving at the two ears needed to detect a change in the directions of a sound source is about a. 20 microseconds
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11. The brain uses various perceptual grouping rules to separate sound sources. Which of the
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PSY 323 test 1 - 1 What elements in the auditory chain are...

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