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Journal Article

Electrophysiological evidence for colour effects on the naming of colour diagnostic and noncolour diagnostic objects

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Petersson,  Karl Magnus
Cognitive Neuroscience Research Group, Departamento de Psicologia, Faculdade de Ciências Humanas e Sociais, and Institute of Biotechnology and Bioengineering/CBME, Universidade do Algarve, Faro, Portugal;
Neurobiology of Language Department, MPI for Psycholinguistics, Max Planck Society;
Donders Institute for Brain, Cognition and Behaviour, External Organizations;

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Citation

Bramão, I., Francisco, A., Inácio, F., Faísca, L., Reis, A., & Petersson, K. M. (2012). Electrophysiological evidence for colour effects on the naming of colour diagnostic and noncolour diagnostic objects. Visual Cognition, 20, 1164-1185. doi:10.1080/13506285.2012.739215.


Cite as: https://hdl.handle.net/11858/00-001M-0000-0010-0C33-F
Abstract
In this study, we investigated the level of visual processing at which surface colour information improves the naming of colour diagnostic and noncolour diagnostic objects. Continuous electroencephalograms were recorded while participants performed a visual object naming task in which coloured and black-and-white versions of both types of objects were presented. The black-and-white and the colour presentations were compared in two groups of event-related potentials (ERPs): (1) The P1 and N1 components, indexing early visual processing; and (2) the N300 and N400 components, which index late visual processing. A colour effect was observed in the P1 and N1 components, for both colour and noncolour diagnostic objects. In addition, for colour diagnostic objects, a colour effect was observed in the N400 component. These results suggest that colour information is important for the naming of colour and noncolour diagnostic objects at different levels of visual processing. It thus appears that the visual system uses colour information, during naming of both object types, at early visual stages; however, for the colour diagnostic objects naming, colour information is also recruited during the late visual processing stages.