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Task relevance effect on number/shape conflict detection in the number-matching task: An ERP study
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Task relevance effect on number/shape conflict detection in the number-matching task: An ERP study
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Task relevance effect on number/shape conflict detection in the number-matching task: An ERP study
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Journal Article
Task relevance effect on number/shape conflict detection in the number-matching task: An ERP study
2020
Overview
It is debatable whether the task relevance effect on a conflict occurs in the detection or in the inhibition underlying sequential matching. To explore this issue, three types of number pairs, identical (e.g., 12, 12), conserved (e.g., 12, 十二), and non-conserved (e.g., 12, 15) pairs, were displayed to be judged as perceptually (identical shape condition) or quantitatively (identical value condition) the same. Both error rates and RTs for the three types of number pairs showed different patterns to detect perceptual mismatch in the identical shape condition and number inequivalence in the identical value conditions. The event-related potential (ERP) results showed that increased N200 and N400 as well as decreased P300 were triggered by the conserved and non-conserved pairs in contrast to identical pairs in the identical shape condition and by the non-conserved pairs relative to the conserved and identical pairs in the identical value condition. These results showed that task-relevant mismatches were attended to and detected in both conditions. Therefore, for the task-relevance effect on a conflict, attention is selectively directed to task-relevant features rather than inhibiting task-irrelevant conflict.
Publisher
Elsevier Science Ltd
Subject
