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Electroencephalography effects to semantic and non-semantic mismatch in properties of visually presented single-characters: the N2b and the N400

Electroencephalography effects to semantic and non-semantic mismatch in properties of visually presented single-characters: the N2b and the N400
Electroencephalography effects to semantic and non-semantic mismatch in properties of visually presented single-characters: the N2b and the N400
Event-related potential (ERP) correlates of semantic and non-semantic mismatch in the 200–400 ms time interval were dissociated. Twelve subjects observed pairs of single letters and digits presented serially, and decided whether the colour (blue or red) or the category membership (letter or number) of the second item in a pair matched the first one. In both tasks mismatch elicited central N2b components (220 ms peak latency in the colour matching task, and 280 ms peak latency in the category matching task). Furthermore, in the category matching task a centro-parietal negativity (N400) emerged. The topography of the N2b effect was clearly distinct from that of the N400 effect. Analysis of event-related spectral perturbations confirmed that N400 time-range effects were specific to category matching. We conclude that while the N400 effect is a specific marker of semantic mismatch, the N2b effect is a general correlate of detecting mismatch between the representations of task-relevant features.
N2, N270, N2b, N400, N300, semantic mismatch, categorization
0304-3940
18-23
Szűcs, Dénes
1020f888-a7ba-48b6-861a-42a7f6ff716c
Soltész, Fruzsina
cbc12e4b-9d6f-4c24-8203-47ae2bd8f470
Czigler, István
f1a2fba8-d021-4bc4-ac85-7e5e9139e904
Csépe, Valéria
54867db6-2e3e-4b46-97d0-6dedd03f1248
Szűcs, Dénes
1020f888-a7ba-48b6-861a-42a7f6ff716c
Soltész, Fruzsina
cbc12e4b-9d6f-4c24-8203-47ae2bd8f470
Czigler, István
f1a2fba8-d021-4bc4-ac85-7e5e9139e904
Csépe, Valéria
54867db6-2e3e-4b46-97d0-6dedd03f1248

Szűcs, Dénes, Soltész, Fruzsina, Czigler, István and Csépe, Valéria (2007) Electroencephalography effects to semantic and non-semantic mismatch in properties of visually presented single-characters: the N2b and the N400. Neuroscience Letters, 412 (1), 18-23. (doi:10.1016/j.neulet.2006.08.090). (PMID:17141414)

Record type: Article

Abstract

Event-related potential (ERP) correlates of semantic and non-semantic mismatch in the 200–400 ms time interval were dissociated. Twelve subjects observed pairs of single letters and digits presented serially, and decided whether the colour (blue or red) or the category membership (letter or number) of the second item in a pair matched the first one. In both tasks mismatch elicited central N2b components (220 ms peak latency in the colour matching task, and 280 ms peak latency in the category matching task). Furthermore, in the category matching task a centro-parietal negativity (N400) emerged. The topography of the N2b effect was clearly distinct from that of the N400 effect. Analysis of event-related spectral perturbations confirmed that N400 time-range effects were specific to category matching. We conclude that while the N400 effect is a specific marker of semantic mismatch, the N2b effect is a general correlate of detecting mismatch between the representations of task-relevant features.

Full text not available from this repository.

More information

Accepted/In Press date: 11 August 2006
Published date: 22 January 2007
Keywords: N2, N270, N2b, N400, N300, semantic mismatch, categorization
Organisations: Psychology

Identifiers

Local EPrints ID: 375355
URI: http://eprints.soton.ac.uk/id/eprint/375355
ISSN: 0304-3940
PURE UUID: 5e847e84-efde-4290-a5dd-ce17f8a78c26

Catalogue record

Date deposited: 20 Mar 2015 14:59
Last modified: 15 Jul 2019 21:26

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