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National Repository of Grey Literature 72 records found  beginprevious72 - 72  jump to record: Search took 0.01 seconds. 
Mental rotation of simplex signs
 Vobořil, Dalibor ; Šikl, Radovan
One of the basic cognitive operations which enables us to recognize observed objects is mental rotation. In order to recognize any object we are continuously encountering in our everyday life we rotate their image in our mind until it corresponds with a prototypical appearance of a given object stored in memory. It is evident that such operation takes longer time when the apparent differences between the image of actual and stored object is considerable, i.e. when it is viewed from rather different angle. Whether this time is dependent also on structural characteristics of mentally rotated object was the scope of present experiment. Subjects were asked to recognize stimuli of different shapes (letters R, G, F, J and Z) exposed in different orientations as measured by their deviation from usual position (from 0 degree to 180 degrees). Our results indicate that reaction time necessary to recognize differently shaped figures is interindividually variable but the profile of increment of reaction time with increasing angle is similar for all observers, no matter which of letters is observed.
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National Repository of Grey Literature : 72 records found   beginprevious72 - 72  jump to record:
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