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Face repetition effects in direct and indirect tasks: an event-related brain potentials study.
Brain Res Cogn Brain Res. 2004 Nov; 21(3):388-400.BR

Abstract

We investigated immediate repetition effects on event-related potentials (ERPs) during direct and indirect tasks for sequentially presented face pairs. The first face (F1) was presented masked or unmasked, and at different stimulus onset asynchronies (SOAs, 67 vs. 1000 ms) preceding the second face (F2). Experiment I (indirect task) required a semantic classification of F2, with F1 identity being irrelevant. Experiment II (direct task) used the same stimulus sequence but required a physical identity matching of F1 and F2. Whereas no masked repetition effects in behaviour or ERPs were seen, such effects were clearly shown for unmasked F1 faces. For short SOAs, an early-onset (approximately 100 ms) occipital repetition effect, an inferior temporal N250r (200-300 ms) and a central-parietal N400 modulation (300-500 ms) were seen in both tasks, whereas a parietal P600 effect (500-800 ms) was only present in the indirect task. For long SOAs, the early occipital effect disappeared, suggesting that it reflects a fast decaying iconic memory trace. Clear task differences were seen for N250r, N400, and P600 modulations: P600 was larger for the indirect task, and may be a correlate of semantic analysis required by this task. By contrast, N250r and N400 were larger for the direct task, suggesting that these components are sensitive to task relevance and/or attentional focus to F1, and thus do not reflect purely automatic facilitation in processing. This suggests an influence of strategic processing on the activation of both perceptual representations of faces and semantic representations of people.

Authors+Show Affiliations

Department of Psychology, University of Glasgow, Glasgow, Scotland G12 8QB, UK.No affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Comparative Study
Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

15511654

Citation

Trenner, Maja U., et al. "Face Repetition Effects in Direct and Indirect Tasks: an Event-related Brain Potentials Study." Brain Research. Cognitive Brain Research, vol. 21, no. 3, 2004, pp. 388-400.
Trenner MU, Schweinberger SR, Jentzsch I, et al. Face repetition effects in direct and indirect tasks: an event-related brain potentials study. Brain Res Cogn Brain Res. 2004;21(3):388-400.
Trenner, M. U., Schweinberger, S. R., Jentzsch, I., & Sommer, W. (2004). Face repetition effects in direct and indirect tasks: an event-related brain potentials study. Brain Research. Cognitive Brain Research, 21(3), 388-400.
Trenner MU, et al. Face Repetition Effects in Direct and Indirect Tasks: an Event-related Brain Potentials Study. Brain Res Cogn Brain Res. 2004;21(3):388-400. PubMed PMID: 15511654.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Face repetition effects in direct and indirect tasks: an event-related brain potentials study. AU - Trenner,Maja U, AU - Schweinberger,Stefan R, AU - Jentzsch,Ines, AU - Sommer,Werner, PY - 2004/06/17/accepted PY - 2004/10/30/pubmed PY - 2005/3/8/medline PY - 2004/10/30/entrez SP - 388 EP - 400 JF - Brain research. Cognitive brain research JO - Brain Res Cogn Brain Res VL - 21 IS - 3 N2 - We investigated immediate repetition effects on event-related potentials (ERPs) during direct and indirect tasks for sequentially presented face pairs. The first face (F1) was presented masked or unmasked, and at different stimulus onset asynchronies (SOAs, 67 vs. 1000 ms) preceding the second face (F2). Experiment I (indirect task) required a semantic classification of F2, with F1 identity being irrelevant. Experiment II (direct task) used the same stimulus sequence but required a physical identity matching of F1 and F2. Whereas no masked repetition effects in behaviour or ERPs were seen, such effects were clearly shown for unmasked F1 faces. For short SOAs, an early-onset (approximately 100 ms) occipital repetition effect, an inferior temporal N250r (200-300 ms) and a central-parietal N400 modulation (300-500 ms) were seen in both tasks, whereas a parietal P600 effect (500-800 ms) was only present in the indirect task. For long SOAs, the early occipital effect disappeared, suggesting that it reflects a fast decaying iconic memory trace. Clear task differences were seen for N250r, N400, and P600 modulations: P600 was larger for the indirect task, and may be a correlate of semantic analysis required by this task. By contrast, N250r and N400 were larger for the direct task, suggesting that these components are sensitive to task relevance and/or attentional focus to F1, and thus do not reflect purely automatic facilitation in processing. This suggests an influence of strategic processing on the activation of both perceptual representations of faces and semantic representations of people. SN - 0926-6410 UR - https://www.unboundmedicine.com/medline/citation/15511654/Face_repetition_effects_in_direct_and_indirect_tasks:_an_event_related_brain_potentials_study_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0926-6410(04)00187-9 DB - PRIME DP - Unbound Medicine ER -