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Event-Related Potential Evidence for Involuntary Consciousness During Implicit Memory Retrieval.


ABSTRACT: Classical notion claims that a memory is implicit if has nothing to do with consciousness during the information retrieval from storage, or is otherwise explicit. Here, we demonstrate event-related potential evidence for involuntary consciousness during implicit memory retrieval. We designed a passive oddball paradigm for retrieval of implicit memory in which an auditory stream of Shepard tones with musical pitch interval contrasts were delivered to the subjects. These contrasts evoked a mismatch negativity response, which is an event-related potential and a neural marker of implicit memory, in the subjects with long-term musical training, but not in the subjects without. Notably, this response was followed by a salient P3 component which implies involvement of involuntary consciousness in the implicit memory retrieval. Finally, source analysis of the P3 revealed moving dipoles from the frontal lobe to the insula, a brain region closely related to conscious attention. Our study presents a case of involvement of involuntary consciousness in the implicit memory retrieval and suggests a potential challenge to the classical definition of implicit memory.

SUBMITTER: Liang XY 

PROVIDER: S-EPMC9272755 | biostudies-literature | 2022

REPOSITORIES: biostudies-literature

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Event-Related Potential Evidence for Involuntary Consciousness During Implicit Memory Retrieval.

Liang Xiu-Yuan XY   Guo Zi-Hao ZH   Wang Xiao-Dong XD   Guo Xiao-Tao XT   Sun Jing-Wu JW   Wang Ming M   Li Hua-Wei HW   Chen Lin L  

Frontiers in behavioral neuroscience 20220627


Classical notion claims that a memory is implicit if has nothing to do with consciousness during the information retrieval from storage, or is otherwise explicit. Here, we demonstrate event-related potential evidence for involuntary consciousness during implicit memory retrieval. We designed a passive oddball paradigm for retrieval of implicit memory in which an auditory stream of Shepard tones with musical pitch interval contrasts were delivered to the subjects. These contrasts evoked a mismatc  ...[more]

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