Echoic Memory: Investigation of Its Temporal Resolution by Auditory Offset Cortical Responses

Previous studies showed that the amplitude and latency of the auditory offset cortical response depended on the history of the sound, which implicated the involvement of echoic memory in shaping a response. When a brief sound was repeated, the latency of the offset response depended precisely on the...

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Main Authors:	Nishihara, Makoto, Inui, Koji, Morita, Tomoyo, Kodaira, Minori, Mochizuki, Hideki, Otsuru, Naofumi, Motomura, Eishi, Ushida, Takahiro, Kakigi, Ryusuke
Format:	Online
Language:	English
Published:	Public Library of Science 2014
Online Access:	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4149571/

id	pubmed-4149571
recordtype	oai_dc
spelling	pubmed-41495712014-09-03 Echoic Memory: Investigation of Its Temporal Resolution by Auditory Offset Cortical Responses Nishihara, Makoto Inui, Koji Morita, Tomoyo Kodaira, Minori Mochizuki, Hideki Otsuru, Naofumi Motomura, Eishi Ushida, Takahiro Kakigi, Ryusuke Research Article Previous studies showed that the amplitude and latency of the auditory offset cortical response depended on the history of the sound, which implicated the involvement of echoic memory in shaping a response. When a brief sound was repeated, the latency of the offset response depended precisely on the frequency of the repeat, indicating that the brain recognized the timing of the offset by using information on the repeat frequency stored in memory. In the present study, we investigated the temporal resolution of sensory storage by measuring auditory offset responses with magnetoencephalography (MEG). The offset of a train of clicks for 1 s elicited a clear magnetic response at approximately 60 ms (Off-P50m). The latency of Off-P50m depended on the inter-stimulus interval (ISI) of the click train, which was the longest at 40 ms (25 Hz) and became shorter with shorter ISIs (2.5∼20 ms). The correlation coefficient r2 for the peak latency and ISI was as high as 0.99, which suggested that sensory storage for the stimulation frequency accurately determined the Off-P50m latency. Statistical analysis revealed that the latency of all pairs, except for that between 200 and 400 Hz, was significantly different, indicating the very high temporal resolution of sensory storage at approximately 5 ms. Public Library of Science 2014-08-29 /pmc/articles/PMC4149571/ /pubmed/25170608 http://dx.doi.org/10.1371/journal.pone.0106553 Text en © 2014 Nishihara et al http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.
repository_type	Open Access Journal
institution_category	Foreign Institution
institution	US National Center for Biotechnology Information
building	NCBI PubMed
collection	Online Access
language	English
format	Online
author	Nishihara, Makoto Inui, Koji Morita, Tomoyo Kodaira, Minori Mochizuki, Hideki Otsuru, Naofumi Motomura, Eishi Ushida, Takahiro Kakigi, Ryusuke
spellingShingle	Nishihara, Makoto Inui, Koji Morita, Tomoyo Kodaira, Minori Mochizuki, Hideki Otsuru, Naofumi Motomura, Eishi Ushida, Takahiro Kakigi, Ryusuke Echoic Memory: Investigation of Its Temporal Resolution by Auditory Offset Cortical Responses
author_facet	Nishihara, Makoto Inui, Koji Morita, Tomoyo Kodaira, Minori Mochizuki, Hideki Otsuru, Naofumi Motomura, Eishi Ushida, Takahiro Kakigi, Ryusuke
author_sort	Nishihara, Makoto
title	Echoic Memory: Investigation of Its Temporal Resolution by Auditory Offset Cortical Responses
title_short	Echoic Memory: Investigation of Its Temporal Resolution by Auditory Offset Cortical Responses
title_full	Echoic Memory: Investigation of Its Temporal Resolution by Auditory Offset Cortical Responses
title_fullStr	Echoic Memory: Investigation of Its Temporal Resolution by Auditory Offset Cortical Responses
title_full_unstemmed	Echoic Memory: Investigation of Its Temporal Resolution by Auditory Offset Cortical Responses
title_sort	echoic memory: investigation of its temporal resolution by auditory offset cortical responses
description	Previous studies showed that the amplitude and latency of the auditory offset cortical response depended on the history of the sound, which implicated the involvement of echoic memory in shaping a response. When a brief sound was repeated, the latency of the offset response depended precisely on the frequency of the repeat, indicating that the brain recognized the timing of the offset by using information on the repeat frequency stored in memory. In the present study, we investigated the temporal resolution of sensory storage by measuring auditory offset responses with magnetoencephalography (MEG). The offset of a train of clicks for 1 s elicited a clear magnetic response at approximately 60 ms (Off-P50m). The latency of Off-P50m depended on the inter-stimulus interval (ISI) of the click train, which was the longest at 40 ms (25 Hz) and became shorter with shorter ISIs (2.5∼20 ms). The correlation coefficient r2 for the peak latency and ISI was as high as 0.99, which suggested that sensory storage for the stimulation frequency accurately determined the Off-P50m latency. Statistical analysis revealed that the latency of all pairs, except for that between 200 and 400 Hz, was significantly different, indicating the very high temporal resolution of sensory storage at approximately 5 ms.
publisher	Public Library of Science
publishDate	2014
url	https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4149571/
_version_	1613129441489190912

Echoic Memory: Investigation of Its Temporal Resolution by Auditory Offset Cortical Responses

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