Brain oscillatory responses during the different stages of an auditory memory search task in children.

Full Abstract

We assessed brain oscillatory responses of the 4-30 Hz electroencephalographic frequency bands in children (mean age 13 years) during the different stages of an auditory memory search, namely the encoding of four words and recognition of the positive and negative probe words. In children, theta (approximately 4-6 Hz) electroencephalographic responses during recognition were of greater magnitude than those during encoding and alpha (approximately 8-12 Hz) event-related synchronization responses during encoding increased with increasing memory load. During recognition, greater magnitude alpha and beta (>12 Hz) event-related desynchronization responses were observed during the presentation of the positive probe as compared with the negative. Complex patterns of theta, alpha and beta frequency brain oscillatory responses during auditory information processing are present already in children of age approximately 13 years.

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Author information

Author/s: Krause, Christina M (CM); Pesonen, Mirka (M); Hämäläinen, Heikki (H);

Affiliation: Cognitive Science Unit, Department of Psychology, University of Helsinki, Helsinki, Finland. christina.krause(-atsign-)helsinki.fi

Journal and publication information

Publication Type: Journal Article; Research Support, Non-U.S. Gov't

Journal: Neuroreport (Neuroreport), published in England. (Language: eng)

Reference: 2007-Feb; vol 18 (issue 3) : pp 213-6

Dates: Created 2007/02/22; Completed 2007/04/27;

PMID: 17314659, status: MEDLINE (last retrieval date: 12/26/2008)

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MeSH headings (categories)

This article was linked to the MESH Headings shown below.

Acoustic Stimulation
Adolescent
Auditory Perception - physiology
Biological Clocks - physiology
Brain - growth & development; physiology
Child
Cortical Synchronization
Evoked Potentials - physiology

Evoked Potentials - physiology
Female
Humans
Language Tests
Male
Memory - physiology
Neuropsychological Tests
Speech Perception - physiology

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