Directing spatial attention in mental representations: Interactions between attentional orienting and working-memory load

Lepsien, Jöran; Griffin, Ivan C.; Devlin, Joseph T.; Nobre, Anna C.

doi:10.1016/j.neuroimage.2005.02.026

Cited by 156 publications

(172 citation statements)

References 62 publications

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“…At the same time, support for overflow has come from experiments employing other paradigms [8,9,[36][37][38][39][40][41][42]. This article assesses the argument for overflow in light of these recent contributions, arguing that rich perceptual contents comport better with the evidence than sparse contents.…”

Section: Glossarymentioning

confidence: 94%

“…Three forms of visual short-term memory A number of laboratories have shown that cues presented up to 12 seconds after an array has disappeared can enhance memory for the array [4,39,[55][56][57]. This technique has been exploited most impressively by a group at the University of Amsterdam that has amassed evidence for a third form of memory, 'fragile visual short-term memory' (fragile VSTM) [8,9,36,37,60], in addition to iconic and working memory (see Figure 4a for a depiction of the basic experimental procedure employed by this group).…”

Section: Trends In Cognitive Sciencesmentioning

confidence: 99%

See 1 more Smart Citation

Perceptual consciousness overflows cognitive access

Block

2011

Trends in Cognitive Sciences

460

379

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Section: Glossarymentioning

confidence: 94%

Section: Trends In Cognitive Sciencesmentioning

confidence: 99%

Perceptual consciousness overflows cognitive access

Block

2011

Trends in Cognitive Sciences

460

379

View full text Add to dashboard Cite

“…The engagement of this frontal-parietal oculomotor network in orienting, together with other task-appropriate areas, has been observed in a variety of spatial and nonspatial orienting tasks, including orienting to semantic categories (Cristescu et al, 2006) and to scenes in long-term (Summerfield et al, 2006) or working memory (Lepsien et al, 2005). The activations in each task com- Figure 3.…”

Section: Shared and Task-biased Activity In The Cortexmentioning

confidence: 98%

The Cerebellum Predicts the Timing of Perceptual Events

O’Reilly¹,

Mesulam²,

Nobre³

2008

J. Neurosci.

246

212

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Prospective (forward) temporal-spatial models are essential for both action and perception, but the literature on perceptual prediction has primarily been limited to the spatial domain. In this study we asked how the neural systems of perceptual prediction change, when change-over-time must be modeled. We used a naturalistic paradigm in which observers had to extrapolate the trajectory of an occluded moving object to make perceptual judgments based on the spatial (direction) or temporal-spatial (velocity) characteristics of object motion. Using functional magnetic resonance imaging we found that a region in posterior cerebellum (lobule VII crus 1) was engaged specifically when a temporal-spatial model was required (velocity judgment task), suggesting that circuitry involved in motor forwardmodeling may also be engaged in perceptual prediction when a model of change-over-time is required. This cerebellar region appears to supply a temporal signal to cortical networks involved in spatial orienting: a frontal-parietal network associated with attentional orienting was engaged in both (spatial and temporal-spatial) tasks, but functional connectivity between these regions and the posterior cerebellum was enhanced in the temporal-spatial prediction task. In addition to the oculomotor spatial orienting network, regions involved in hand movements (aIP and PMv) were recruited in the temporal-spatial task, suggesting that the nature of perceptual prediction may bias the recruitment of sensory-motor networks in orienting. Finally, in temporal-spatial prediction, functional connectivity was enhanced between the cerebellum and the putamen, a structure which has been proposed to supply the brain's metric of time, in the temporal-spatial prediction task.

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“…Previous studies have shown that whereas visual WM for multiple items is fragile, memory representation for a single item is more robust (Makovski & Jiang, 2007). In particular, if participants are given a cue during the retention interval about which item will be tested, they can focus on the memory of that item and refresh its representation (Griffin & Nobre, 2003;Landman et al, 2003;Lepsien, Griffin, Devlin, & Nobre, 2005;Lepsien & Nobre, 2007;Makovski & Jiang, 2007). This leads to higher performance and greater resistance to interference Matsukura, Luck, & Vecera, 2007;Sligte et al, 2008).…”

Section: Methodsmentioning

confidence: 99%

Method matters: Systematic effects of testing procedure on visual working memory sensitivity

Makovski¹,

Watson²,

Koutstaal³

et al. 2010

PsycEXTRA Dataset

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Visual working memory (WM) is traditionally considered a robust form of visual representation that survives changes in object motion, observer's position, and other visual transients. This study presents data that are inconsistent with the traditional view. We show that memory sensitivity is dramatically influenced by small variations in the testing procedure, supporting the idea that representations in visual WM are susceptible to interference from testing. In this study, participants were shown an array of colors to remember. After a short retention interval, memory for one of the items was tested with either a same-different task or a 2-alternative-forced-choice (2AFC) task. Memory sensitivity was much lower in the 2AFC task than in the same-different task. This difference was found regardless of encoding similarity or whether visual WM required a fine memory resolution or a coarse resolution. The 2AFC disadvantage was reduced when participants were informed shortly before testing which item would be probed. The 2AFC disadvantage diminished in perceptual tasks and was not found in tasks probing visual long-term memory. These results support memory models that acknowledge the labile nature of visual WM, and have implications for the format of visual WM and its assessment.

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Directing spatial attention in mental representations: Interactions between attentional orienting and working-memory load

Cited by 156 publications

References 62 publications

Perceptual consciousness overflows cognitive access

Perceptual consciousness overflows cognitive access

The Cerebellum Predicts the Timing of Perceptual Events

Method matters: Systematic effects of testing procedure on visual working memory sensitivity

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