Automatic change detection: Does the auditory system use representations of individual stimulus features or gestalts?

Author(s): Nousak, J. M., Pilotti, M., Ritter, W., Yang, C. M.

Journal/Book: Psychophysiology. 1998; 35: 40 West 20TH Street, New York, NY 10011-4211. Cambridge Univ Press. 413-419.

Abstract: The effects of global and feature-specific probabilities of auditory stimuli were manipulated to determine their effects on the mismatch negativity (MMN) of the human event-related potential. The question of interest was whether the automatic comparison of stimuli indexed by the MMN was performed on representations of individual stimulus features or on gestalt representations of their combined attributes. The design of the study was such that both feature and gestalt representations could have been available to the comparator mechanism generating the MMN. The data were consistent with the interpretation that the MMN was generated following an analysis of stimulus features.

Note: Article Deacon D, CUNY City Coll, Dept Psychol, 138TH St & Convent Ave, New York,NY 10031 USA

Keyword(s): mismatch negativity; preattentive storage; MISMATCH NEGATIVITY; MEMORY; STORAGE; CORTEX; MODEL

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