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eeob 4550 final Exam | questions with 100% Correct Answers ( A Graded)
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eeob 4550 final Exam | questionswith 100% Correct Answers ( A
Graded)
How do we link brain structure to function? - ANSWER • Lesion (eliminate influence of
structure)
• Stimulate (activate structure's influence)
• Record (is structure active during
behavior?)
neurons in HVC function - ANSWER -participate in generating the
sequence of syllables within a song
- activity corresponded to syllables
- syllables differing by 1 note had diff. HVC
activity
- controls syllable structure
and sequencing
neurons in RA function - ANSWER - receive their timing
instructions from above (HVC)
- activity corresponded to particular notes even in different syllables
- controls note structure
When HVC and RA stimulated - ANSWER -in HVC, Interrupting song will cause the
bird to start song over (occurs some of the time) or result in deletion of syllables or
repetition of syllables - this suggests that HVC regulates the bird's song
-If the RA is stimulated,pause during stimulate then continue
, Early deafening (in birds) results in - ANSWER impoverished song
Late deafening (in birds) results in - ANSWER has some effect but it is not profound
- this implies that bird establishes motor tape of song while learning
What brain mechanisms are involved in song memorization? - ANSWER The
anterior forebrain pathway
• Lesions in adults do not disrupt
song production
• Lesions in young birds inhibit song learning
-Anatomical evidence suggests anterior pathway may be involved in vocal learning
Bird acquires song template during what - ANSWER -the sensitive phase
Are Anterior forebrain neurons active during learning? - ANSWER 1) Juvenile AF
neurons are auditory, but unselective
2) Adult AF neurons become more selective as
you ascend the pathway (X ---> LMAN)
When does response selectivity develop? - ANSWER -Selectivity for the bird's own
song in HVC develops from experience
-HVC does not show selectivity for tutor songs -
HVC shows weak selectivity in naïve birds
Auditory properties of Anterior forebrain neurons: - ANSWER • selective for BOS in
adults
• unselective early in sensitive phase (30 da)
• selective at 60 da:
- most prefer BOS
- some prefer tutor song
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