Behavioral and physiological findings of global-local mental rotation
نویسندگان
چکیده
This study was aimed to explore the cognitive mechanism of global advantage on mental rotation. Using event-related potential and divided-attention paradigm of compound stimuli, we observed that subjects` response to global rotation was faster than their response to local rotation, and the parietal P300 amplitude was inversely related to the character orientation. What’s more, the local rotation task delayed the onset of the mental-rotation-related negativity at frontal and parietal electrodes. None clear effect was found for occipital N150. These findings suggest mental rotation of the global level occurs earlier than processing of the local one and further provide convergent evidence for our previous finding using a focused-attention paradigm.
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