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Postural costs of performing cognitive tasks in non-coincident reference frames

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Fraizer, E. V. and Mitra, Subhobrata (2008) Postural costs of performing cognitive tasks in non-coincident reference frames. Experimental Brain Research, Vol.185 (No.3). pp. 429-441. doi:10.1007/s00221-007-1163-1 ISSN 0014-4819.

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Official URL: http://dx.doi.org/10.1007/s00221-007-1163-1

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Abstract

Dual-task interactions in posture and cognitive tasks have been explained as a competition for spatial processing structures or as interference in the online sensorimotor adjustments required for sensory integration. Going beyond these general terms accounts, we propose that interference between spatial and temporal operations in posture-cognition arises at least partly from the need to share a common behavioral context, such as a spatial frame of reference. Using immersive visualization and motion-tracking techniques, we manipulated the spatial reference frames for a standing task and a conjunction visual search task into or out of coincidence. Aside from performance trade-offs due to task-load manipulations, performing visual search in a non-coincident reference frame led to cognitive task and postural task performance decrements (Experiment 1). Postural dual-task decrements were also observed when visual search was split between coincident and non-coincident frames and both frame conditions rendered identical in visual information relevant to posture control (Experiment 2). We concluded that the postural control costs observed for posture-cognition dual-tasking may in part reflect costs of keeping tasks' reference frames in register.

Item Type: Journal Article
Subjects: R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Divisions: Faculty of Science, Engineering and Medicine > Science > Psychology
Journal or Publication Title: Experimental Brain Research
Publisher: Springer
ISSN: 0014-4819
Official Date: March 2008
Dates:
DateEvent
March 2008Published
Volume: Vol.185
Number: No.3
Number of Pages: 13
Page Range: pp. 429-441
DOI: 10.1007/s00221-007-1163-1
Status: Peer Reviewed
Publication Status: Published
Access rights to Published version: Restricted or Subscription Access

Data sourced from Thomson Reuters' Web of Knowledge

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