Distinct neural mechanisms for repetition effects of visual objects

C. Guo; A. L. Lawson; Y. Jiang

doi:10.1016/j.neuroscience.2007.07.060

Distinct neural mechanisms for repetition effects of visual objects

C. Guo, A. L. Lawson, Y. Jiang

Research output: Contribution to journal › Article › peer-review

25 Scopus citations

Abstract

Repetition of visually common objects was examined in relation to prior intentional learning and memory status using a delayed match-to-sample task in humans. Both response time and two temporally separate event-related potential (ERP) components indexed repetition. The early repetition effect (∼200-550 ms) evoked more ERP responses for repeated visual objects, and was diminished by prior intentional learning (old/new) or being maintained in working memory (targets/distracters). In contrast, the late repetition effect (after ∼550 ms) evoked reduced ERP activation for repeated items, and was not affected by prior learning or working memory status. Our source localization results indicate that the late and posterior repetition effect in visual cortex is consistent with repetition suppression results reported in monkey physiology and human fMRI studies. Meanwhile, the early and anterior repetition effect, in temporal pole and frontal cortices, is modulated by explicit memory mechanisms.

Original language	English
Pages (from-to)	747-759
Number of pages	13
Journal	Neuroscience
Volume	149
Issue number	4
DOIs	https://doi.org/10.1016/j.neuroscience.2007.07.060
State	Published - Nov 23 2007

Bibliographical note

Funding Information:
The present study was supported by NIH grant AG00986, a pilot grant as part of NIH grant P50 AG05144-21 (Y.J.), Chinese Ministry of Education 20040028001, Beijing Key Laboratory PHR(IHLB), and National Natural Science Foundation of China 30170322 and 30570603 (C.G.). The authors thank Q. Zhang for assistance in data collection, and two anonymous reviewers for insightful suggestions.

Funding

The present study was supported by NIH grant AG00986, a pilot grant as part of NIH grant P50 AG05144-21 (Y.J.), Chinese Ministry of Education 20040028001, Beijing Key Laboratory PHR(IHLB), and National Natural Science Foundation of China 30170322 and 30570603 (C.G.). The authors thank Q. Zhang for assistance in data collection, and two anonymous reviewers for insightful suggestions.

Funders	Funder number
Beijing Key Laboratory PHR
National Institutes of Health (NIH)	P50 AG05144-21, AG00986
National Institute on Aging	P50AG005144
National Natural Science Foundation of China (NSFC)	30170322, 30570603
Ministry of Education of the People's Republic of China	20040028001

Keywords

EEG/ERPs
LORETA
fMRI
priming
temporal pole
working memory

ASJC Scopus subject areas

General Neuroscience

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10.1016/j.neuroscience.2007.07.060

Cite this

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title = "Distinct neural mechanisms for repetition effects of visual objects",

abstract = "Repetition of visually common objects was examined in relation to prior intentional learning and memory status using a delayed match-to-sample task in humans. Both response time and two temporally separate event-related potential (ERP) components indexed repetition. The early repetition effect (∼200-550 ms) evoked more ERP responses for repeated visual objects, and was diminished by prior intentional learning (old/new) or being maintained in working memory (targets/distracters). In contrast, the late repetition effect (after ∼550 ms) evoked reduced ERP activation for repeated items, and was not affected by prior learning or working memory status. Our source localization results indicate that the late and posterior repetition effect in visual cortex is consistent with repetition suppression results reported in monkey physiology and human fMRI studies. Meanwhile, the early and anterior repetition effect, in temporal pole and frontal cortices, is modulated by explicit memory mechanisms.",

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author = "C. Guo and Lawson, {A. L.} and Y. Jiang",

note = "Funding Information: The present study was supported by NIH grant AG00986, a pilot grant as part of NIH grant P50 AG05144-21 (Y.J.), Chinese Ministry of Education 20040028001, Beijing Key Laboratory PHR(IHLB), and National Natural Science Foundation of China 30170322 and 30570603 (C.G.). The authors thank Q. Zhang for assistance in data collection, and two anonymous reviewers for insightful suggestions.",

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AU - Lawson, A. L.

AU - Jiang, Y.

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N2 - Repetition of visually common objects was examined in relation to prior intentional learning and memory status using a delayed match-to-sample task in humans. Both response time and two temporally separate event-related potential (ERP) components indexed repetition. The early repetition effect (∼200-550 ms) evoked more ERP responses for repeated visual objects, and was diminished by prior intentional learning (old/new) or being maintained in working memory (targets/distracters). In contrast, the late repetition effect (after ∼550 ms) evoked reduced ERP activation for repeated items, and was not affected by prior learning or working memory status. Our source localization results indicate that the late and posterior repetition effect in visual cortex is consistent with repetition suppression results reported in monkey physiology and human fMRI studies. Meanwhile, the early and anterior repetition effect, in temporal pole and frontal cortices, is modulated by explicit memory mechanisms.

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Distinct neural mechanisms for repetition effects of visual objects

Abstract

Bibliographical note

Funding

Keywords

ASJC Scopus subject areas

Access to Document

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