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Mental Imagery Cracked: Direct Monitoring of the Continuous Movements of Covert Visuospatial Attention During Motion Imagery
Gregori Grgič, Regina
Calore, Enrico
Marini, Daniele
de’Sperati, Claudio
2014
Abstract
We sought to provide direct evidence of the attention
movements during dynamic mental imagery. Observers
extrapolated in imagery the horizontal motion of a target with
the gaze in central fixation. We recorded the steady-statevisual-
evoked potentials (SSVEP) generated by flickering the
left and right sides of the screen at two different frequencies.
We found a consistent SSVEP modulation as a function of the
imagined target position. Concurrent finger pointing, but not
mental training, increased the SSVEP modulation. We
conclude that the electrophysiological signature of covert
visuospatial attention can be used to reveal non-invasively the
continuous spatio-temporal dynamics of mental imagery.
Publisher
EUT Edizioni Università di Trieste
Source
Regina Gregori Grgič, Enrico Calore, Daniele Marini, Claudio de’Sperati, "Mental Imagery Cracked: Direct Monitoring of the Continuous Movements of Covert Visuospatial Attention During Motion Imagery" in: Paolo Bernardis, Carlo Fantoni, Walter Gerbino (eds.) "TSPC2014. Proceedings of the Trieste Symposium on Perception and Cognition, November 27-28", Trieste, EUT Edizioni Università di Trieste, 2014, pp. 108-110.
Languages
en
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