Effects of working memory load in EEG oscillatory power in adolescents with Asperger syndrome
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1
Department of Psychology, Cognitive Science, University of Helsinki, Finland
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2
Department of Psychology, Cognitive Brain Research Unit, University of Helsinki, Finland
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3
Department of Clinical Neurophysiology, Oulu University Hospital, Finland
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4
Department of Child Psychiatry, Oulu University Hospital, Finland
Asperger syndrome (AS) is a neurodevelopmental disorder that belongs to the autism spectrum of disorders. AS is characterised by impaired social interaction and deficits in executive functions, including memory processes. Event-related synchronization (ERS) and desynchronization (ERD) of the 1–35 Hz EEG frequencies were studied during an auditory-verbal Sternberg's working memory task in nine adolescents with Asperger syndrome (mean age 15,0 years) and in thirteen healthy control subjects (mean age 14,4 years). ERS/ERD responses were studied separately for two memory load conditions in which the size of a memory set was either four or seven auditorily presented words. ERS/ERD responses were studied during encoding, retrieval and recognition phases in the working memory task. The purpose in this study was to examine how increase in memory load affects brain oscillatory responses in various frequency bands and whether these responses are different for adolescents with AS as compared to those of control subjects.
Conference:
10th International Conference on Cognitive Neuroscience, Bodrum, Türkiye, 1 Sep - 5 Sep, 2008.
Presentation Type:
Poster Presentation
Topic:
Brain Electrical Oscillations in Cognition
Citation:
Pehunen
V,
Andersson
A,
Hakala
T,
Kujala
T,
Jansson-Verkasa
E,
Suominen
K,
Kuusikko
S and
Krause
CM
(2008). Effects of working memory load in EEG oscillatory power in adolescents with Asperger syndrome.
Conference Abstract:
10th International Conference on Cognitive Neuroscience.
doi: 10.3389/conf.neuro.09.2009.01.135
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Received:
05 Dec 2008;
Published Online:
05 Dec 2008.
*
Correspondence:
Venla Pehunen, Department of Psychology, Cognitive Science, University of Helsinki, Helsinki, Finland, venla.pehunen@helsinki.fi