Gonzalez F, 2010, "Time is critical in dorsal contribution for object recognition" Perception 39 ECVP Abstract Supplement, page 190
Time is critical in dorsal contribution for object recognition
The dorsal stream for vision is known to be responsible for motor actions control (Milner and Goodale, 1996 The visual brain in action Oxford University Press, Oxford). Research on object recognition has recently established the existence of some degree of a dorsal stream contribution in object recognition (Vainio et al, 2008 Cognition 108 444-465; Borghi et al, 2005 COGSCI2005). The aim of this work is to explore the temporal dynamics of the interaction of dorsal and ventral streams for object categorization. In experiment 1 we run a RT task with 30 subjects who had to indicate if an object was natural or manmade, half of the objects were big and half were small. Three different primings (videos) were presented at the beginning of each trial: a power grasp, a precision grasp and a catch trial. In the trials in which grasp and object size were congruent, a peak of facilitation was found. In experiment 2 we introduced different SOA conditions (0, 500, 1000 ms) observing a stronger facilitation effect at the 500 ms condition. We suggest that time is critical in the interaction of ventral and dorsal paths for vision in object recognition.
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