Please use this identifier to cite or link to this item: http://hdl.handle.net/1959.14/126185
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- Title
- An EEG/MEG study of anticipatory postural adjustment in a bimanual load-lifting task
- Related
- Conference of the Australasian Society for Cognitive Science (9th : 2009) (30 September - 2 October 2009 : Sydney)
- Related
- Christensen, Wayne; Schier, Elizabeth and Sutton, John. ASCS09 : proceedings of the 9th conference of the Australasian Society for Cognitive Science, p.261-268
- DOI
- 10.5096/ASCS200940
- Publisher
- North Ryde, NSW : Macquarie Centre for Cognitive Science
- Date
- 2010
- FoR/RFCD Code(s)
-
170200 Cognitive Sciences
- Author/Creator
- Ng, Tommy
- Author/Creator
- Sowman, Paul
- Author/Creator
- Brock, Jon
- Author/Creator
- Johnson, Blake
- Description
- Anticipatory postural adjustments (APA) are necessary for counteracting destabilizing forces induced by prime movements. The present study examined APA in a bimanual load-lifting task using simultaneous electroencephalography (EEG) and magnetoencephalography (MEG). A 1-kg weight placed on the left arm was either lifted by an experimenter (imposed condition) or by the subject (voluntary condition). In the imposed condition, inhibition of electromyographic (EMG) activity in the load-bearing muscle (biceps brachii, BB) only occurred after the onset of unloading and was accompanied by event-related desynchronisation (ERD) of cortical activity in the beta frequency band (15-30 Hz). This ERD was localized to the primary sensory cortex using beamforming analyses. In the voluntary condition, EMG inhibition and beta ERD occurred prior to the onset of lifting and beta ERD was localized to the primary motor cortex. This anticipatory cortical and muscle activity ties in well with the feedforward property of APA. This paradigm will be used to study problems of neuro-motor coordination in autism spectrum disorders (ASD).
- Description
- 8 page(s)
- Subject Keyword
- 170200 Cognitive Sciences
- Subject Keyword
- event-related desynchronisation
- Subject Keyword
- anticipatory postural adjustment
- Subject Keyword
- bimanual coordination
- Subject Keyword
- autism spectrum disorder
- Resource Type
- ASCS09 : Proceedings Of The 9th Conference Of The Australasian Society For Cognitive Science
- Resource Type
- conference paper
- Organisation
- Macquarie University. Macquarie Centre for Cognitive Science
- Identifier
- http://hdl.handle.net/1959.14/126185
- Identifier
- ISBN:9780646529189
- Identifier
- mq-rm-2009009248
- Language
- eng
- Rights
- Copyright 2009 by the Australasian Society for Cognitive Science. Publisher version archived with the permission of the Editor, ASCS09 : Proceedings of the 9th Conference of the Australasian Society for Cognitive Science. This copy is available for individual, non-commercial use. Permission to reprint/republish this version for other uses must be obtained from the publisher.
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