| Reflex modification in the rat: the inhibitory effects of intensity and frequency changes in steady tones. | |
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MedLine Citation:
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PMID: 3989474 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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In laboratory rats (as in humans) a low-intensity tone that precedes a high-intensity burst of noise by approximately 100 ms can reduce the amplitude of the startle reaction elicited by the burst of noise. A series of four experiments with rats investigated the relation between the inhibitory effects of tonal frequency change and the length of the silent period (gap) preceding it. The major findings were the following: (a) A gap in an otherwise continuous pure tone inhibited startle when the gap occurred approximately 100 ms prior to the noise burst. (b) Although an increase in gap duration increased the inhibition afforded by the gap, the maximum inhibition was yielded by gaps of 100 ms and greater; this maximum was equivalent to the inhibition yielded by the presentation of a postgap tone alone. (c) A shift in tonal frequency across a 10-ms gap yielded more inhibition than did the same gap with no frequency shift; again the shift yielded equivalent inhibition to the presentation of the postgap tone alone. (d) An increase in the frequency shift increased inhibition when the shift occurred across a 10-ms gap, but not when the shift occurred across a 100-ms gap. |
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Authors:
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J Cranney; M E Cohen; H S Hoffman |
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Publication Detail:
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Type: Journal Article; Research Support, U.S. Gov't, P.H.S. |
Journal Detail:
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Title: Journal of experimental psychology. Animal behavior processes Volume: 11 ISSN: 0097-7403 ISO Abbreviation: J Exp Psychol Anim Behav Process Publication Date: 1985 Jan |
Date Detail:
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Created Date: 1985-05-28 Completed Date: 1985-05-28 Revised Date: 2007-11-14 |
Medline Journal Info:
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Nlm Unique ID: 7504289 Medline TA: J Exp Psychol Anim Behav Process Country: UNITED STATES |
Other Details:
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Languages: eng Pagination: 112-9 Citation Subset: IM |
Export Citation:
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APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
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Acoustic Stimulation Animals Arousal Male Pitch Perception* Rats Startle Reaction* |
| Grant Support | |
ID/Acronym/Agency:
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HD 10511/HD/NICHD NIH HHS |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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