Exact(16)
Sebastian Watzl has recently suggested that the role of attention is to impose a peripherality relation on experience, which defines a 'priority space', in which attended items are centrally located (Watzl, 2011).
No decision point effect was found for the attended items.
First, for the non-decision point objects, attended items were more accurately recognized than less attended items, although recognition accuracy for these two stimulus types did not differ significantly from chance performance.
The scalp distributions show the N2pc as a negativity at posterior electrodes sites contralateral to the attended items.
The scalp distributions show the Ptc as a positivity at posterior-temporal electrodes sites contralateral to the attended items.
Specifically, N2pc amplitude was smallest when the target and decoy were adjacent and was larger as the distance between the two attended items increased.
Similar(44)
This process involves disengagement from the currently attended item, a shift in spatial attention, and then reengagement onto the new item.
Observers might select a limited set of items to track or they might scan through the whole set, only effectively attending to a few items at any given time and hoping to catch the change if it happens to an attended item.
Also, when a large portion of bilateral displays were used, as in the present study, an enhanced P1 contralateral to the attended item was accompanied by a larger N1 ipsilateral to the attended item [12], [13].
The N2pc, which typically starts about 180 ms post-target onset and lasts about 100 ms, is maximal at posterior electrode sites contralateral to an attended item and is isolated by subtracting activity at electrode sites ipsilateral to the attended item from the corresponding activity at electrode sites contralateral to the attended item (e.g., PO7/PO8).
The component is seen approximately 175 300 ms after the onset of the display and selection of the attended item is reflected in greater negative activity contralateral as compared to ipsilateral to the attended item.
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