In:
The Journal of the Acoustical Society of America, Acoustical Society of America (ASA), Vol. 117, No. 4_Supplement ( 2005-04-01), p. 2468-2468
Kurzfassung:
Humans are sensitive to small discrepancies between two sounds, and can detect a transient change in sound correlation. Here, prepulse inhibition of the startle reflex was used to examine rats sensitivity to transient changes in correlation between two correlated broadband noises, which were delivered by two spatially separated loudspeakers. The results show that either an uncorrelated noise fragment (UCNF, a drop of inter-sound correlation from 1.00 to 0 and then return to 1.00) or an anti-phase noise fragment (APNF, a drop of inter-sound correlation from 1.00 to −1.00 and then return to 1.00) could be detected by rats, since each of the changes in correlation could act as a prepulse stimulus to inhibit the startle reflex. The duration threshold for detecting the APNF was much lower than that for the UCNF. The detection of each of the changes in correlation was improved either by prolonged testing or by temporally pairing the UCNF or APNF with footshock. Thus similar to humans, rats also have the sensitivity to a sudden change in inter-sound correlation. Moreover, an increase of the sensitivity can be induced in rats either by repeated exposure to the change in correlation or by emotional learning.
Materialart:
Online-Ressource
ISSN:
0001-4966
,
1520-8524
Sprache:
Englisch
Verlag:
Acoustical Society of America (ASA)
Publikationsdatum:
2005
ZDB Id:
1461063-2
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