ERIC Number: EJ740374
Record Type: Journal
Publication Date: 2006-Aug
Effect of Unpleasant Loud Noise on Hippocampal Activities during Picture Encoding: An fMRI Study
Hirano, Yoshiyuki; Fujita, Masafumi; Watanabe, Kazuko; Niwa, Masami; Takahashi, Toru; Kanematsu, Masayuki; Ido, Yasushi; Tomida, Mihoko; Onozuka, Minoru
Brain and Cognition, v61 n3 p280-285 Aug 2006
The functional link between the amygdala and hippocampus in humans has not been well documented. We examined the effect of unpleasant loud noise on hippocampal and amygdaloid activities during picture encoding by means of fMRI, and on the correct response in humans. The noise reduced activity in the hippocampus during picture encoding, decreased the correct response and increased the activity of the amygdala. A path diagram using structural equation modeling suggested that hippocampus activity might be depressed by high amygdala activity. Therefore, noise should diminish memory by reducing hippocampal activity, which might be depressed by high amygdala activity.
Descriptors: Neurolinguistics, Acoustics, Visual Learning, Cognitive Processes, Brain Hemisphere Functions, Memory
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Publication Type: Journal Articles; Reports - Evaluative
Education Level: N/A
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