The where and how of attention-based rehearsal in spatial working memory. Postle, B., Awh, E, Jonides, J, Smith, E., & D'Esposito, M Cognitive Brain Research, 20(2):194–205, July, 2004.
The where and how of attention-based rehearsal in spatial working memory [link]Paper  doi  abstract   bibtex   
Rehearsal in human spatial working memory is accomplished, in part, via covert shifts of spatial selective attention to memorized locations (“attention-based rehearsal”). We addressed two outstanding questions about attention-based rehearsal: the topography of the attention-based rehearsal effect, and the mechanism by which it operates. Using event-related fMRI and a procedure that randomized the presentation of trials with delay epochs that were either filled with a flickering checkerboard or unfilled, we localized the effect to extrastriate areas 18 and 19, and confirmed its absence in striate cortex. Delay-epoch activity in these extrastriate regions, as well as in superior parietal lobule and intraparietal sulcus, was also lateralized on unfilled trials, suggesting that attention-based rehearsal produces a baseline shift in areas representing the to-be-remembered location in space. No frontal regions (including frontal eye fields) demonstrated lateralized activity consistent with a role in attention-based rehearsal.
@article{postle_where_2004,
	title = {The where and how of attention-based rehearsal in spatial working memory},
	volume = {20},
	issn = {0926-6410},
	url = {http://www.sciencedirect.com/science/article/pii/S0926641004000679},
	doi = {10/bvzggc},
	abstract = {Rehearsal in human spatial working memory is accomplished, in part, via covert shifts of spatial selective attention to memorized locations (“attention-based rehearsal”). We addressed two outstanding questions about attention-based rehearsal: the topography of the attention-based rehearsal effect, and the mechanism by which it operates. Using event-related fMRI and a procedure that randomized the presentation of trials with delay epochs that were either filled with a flickering checkerboard or unfilled, we localized the effect to extrastriate areas 18 and 19, and confirmed its absence in striate cortex. Delay-epoch activity in these extrastriate regions, as well as in superior parietal lobule and intraparietal sulcus, was also lateralized on unfilled trials, suggesting that attention-based rehearsal produces a baseline shift in areas representing the to-be-remembered location in space. No frontal regions (including frontal eye fields) demonstrated lateralized activity consistent with a role in attention-based rehearsal.},
	number = {2},
	urldate = {2012-05-18},
	journal = {Cognitive Brain Research},
	author = {Postle, B.R and Awh, E and Jonides, J and Smith, E.E and D'Esposito, M},
	month = jul,
	year = {2004},
	keywords = {\#nosource, Extrastriate cortex, Spatial working memory, fMRI, parietal cortex, selective attention},
	pages = {194--205},
}

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