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Imagery research has identified two main visual perspectives, External Visual Imagery (EVI, third-person) and Internal Visual Imagery (IVI, first-person). Based upon findings from brain imaging literature showing different neural substrates are recruited for IVI and EVI perspectives, and that IVI activates motor system brain areas, we hypothesized that a concurrent action dual-task would cause greater interference in performance for IVI than EVI. In a first experiment, participants were allocated to either an IVI or an EVI group, and were tasked with moving an onscreen marker towards a target in three blocked conditions; imagery, imagery with a concurrent motor dual-task of sequencing, and a math control. An interaction between imagery group and condition was driven by greater Root Mean Square Error for participants in the dual-task condition in the IVI group compared to the EVI group. We replicated the experiment with an eye tracking objective measure of IVI, the results again showed that participants in the IVI group made more errors in motor movements, and an interference effect in eye movements, during the dual-task sequencing condition compared to the EVI group. The results of the two experiments reveal that a secondary motor task does interfere with IVI, providing behavioural evidence that IVI appears to rely on motor system processes more than EVI. These results have important implications for the use of visual imagery perspectives across a number of domains, with the paper being an essential reference for those conducting visual imagery perspectives research.
Iaith wreiddiolSaesneg
Tudalennau (o-i)1401-1411
CyfnodolynQuarterly Journal of Experimental Psychology
Rhif y cyfnodolyn6
Dyddiad ar-lein cynnar14 Tach 2018
Dynodwyr Gwrthrych Digidol (DOIs)
StatwsCyhoeddwyd - 1 Meh 2019

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