Preattentive extraction of abstract feature conjunctions from auditory stimulation as reflected by the mismatch negativity (MMN)

Psychophysiology - Tập 38 Số 2 - Trang 359-365 - 2001
Petri Paavilainen1, Jaana Simola2, Maria Jaramillo2, Risto Näätänen3,2, István Winkler2,4
1#N##TAB##TAB##TAB##TAB# University of Helsinki#N##TAB##TAB##TAB#
2Cognitive Brain Research Unit, Department of Psychology, University of Helsinki, Finland
3BioMag Laboratory, Helsinki University Central Hospital, Helsinki, Finland
4Institute for Psychology, Hungarian Academy of Sciences, Budapest, Hungary

Tóm tắt

Brain mechanisms extracting invariant information from varying auditory inputs were studied using the mismatch‐negativity (MMN) brain response. We wished to determine whether the preattentive sound‐analysis mechanisms, reflected by MMN, are capable of extracting invariant relationships based on abstract conjunctions between two sound features. The standard stimuli varied over a large range in frequency and intensity dimensions following the rule that the higher the frequency, the louder the intensity. The occasional deviant stimuli violated this frequency–intensity relationship and elicited an MMN. The results demonstrate that preattentive processing of auditory stimuli extends to unexpectedly complex relationships between the stimulus features.

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Psychophysiology

Tập 38 Số 2

359-365

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