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A high density ERP comparison of mental rotation and mental size transformation

Muthukumaraswamy, Suresh Daniel, Johnson, Blake W. and Hamm, Jeff P. 2003. A high density ERP comparison of mental rotation and mental size transformation. Brain and Cognition 52 (2) , pp. 271-280. 10.1016/S0278-2626(03)00077-0

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To compare mental rotation and mental size transformation, 128-channel EEG was recorded while subjects performed both tasks using random two-dimensional shapes as stimuli. Behavioural results showed significant linear effects of both size transformation and mental rotation on reaction times. Rotation ERPs showed experimental effects at two latencies: a bilateral component distributed over posterior parietal electrodes at a latency of approximately 232–300 ms and a second component at approximately 424–492 ms distributed over right anterior parietal electrodes. The latency and spatial distribution of this second effect is consistent with previous research indicating a functional connection between this component and mental rotation. ERPs for the size-transformation task showed an effect at 180–228 ms distributed bilaterally over occipital–temporal electrodes. These results are consistent with previous hemodynamic imaging studies that show involvement of parietal cortex in mental rotation and also the involvement of BA 19 in size-transformation tasks. However, the superior temporal resolution of the present data indicates that BA 19 activation may occur at a latency that is more likely related to apparent motion than to the size-transformation operation per se.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Psychology
Subjects: B Philosophy. Psychology. Religion > BF Psychology
R Medicine > RC Internal medicine > RC0321 Neuroscience. Biological psychiatry. Neuropsychiatry
Uncontrolled Keywords: Mental rotation; Size transformation; Image transformation; ERPs; EEG; Brain mapping
Publisher: Elsevier
ISSN: 0278-2626
Last Modified: 09 Sep 2019 22:11

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