Multiple visuospatial working memory buffers: Evidence from spatiotemporal patterns of brain activity

Ruchkin, Daniel S.; Johnson, Ray; Grafman, Jordan; Canoune, Howard L.; Ritter, Walter

doi:10.1016/s0028-3932(96)00068-1

Cited by 99 publications

(66 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, there are good reasons to predict that the data pattern for changing shape as a task-irrelevant feature between study and test will be rather different from that for changing location-not least given the body of evidence suggesting that features, such as shape and color, that identify an object are processed via a different neuroanatomical pathway than is location (e.g., Carlesimo, Perri, Turriziani, Tomaiuolo, & Caltagirone, 2001;Funahashi, Takeda, & Watanabe, 2004;Ruchkin, Johnson, Grafman, Canoune, & Ritter, 1997;Smith & Jonides, 1995Ungerleider & Mishkin, 1982). This dissociation between the so-called ventral and dorsal processing streams might also suggest that color-shape bindings should be particularly strong given that these features are processed along the same (ventral) pathway and can define an object.…”

Section: Methodsmentioning

confidence: 99%

Feature binding in visual short-term memory is unaffected by task-irrelevant changes of location, shape, and color

2010

View full text Add to dashboard Cite

Three experiments used a change detection paradigm across a range of study-test intervals to address the respective contributions of location, shape, and color to the formation of bindings of features in sensory memory and visual short-term memory (VSTM). In Experiment 1, location was designated task irrelevant and was randomized between study and test displays. The task was to detect changes in the bindings between shape and color. In Experiments 2 and 3, shape and color, respectively, were task irrelevant and randomized, with bindings tested between location and color (Experiment 2) and location and shape (Experiment 3). At shorter study-test intervals, randomizing location was most disruptive, followed by shape and then color. At longer intervals, randomizing any task-irrelevant feature had no impact on change detection for bindings between features, and location had no special role. Results suggest that location is crucial for initial perceptual binding but loses that special status once representations are formed in VSTM, which operates according to different principles, than do visual attention and perception.

show abstract

Section: Methodsmentioning

confidence: 99%

Feature binding in visual short-term memory is unaffected by task-irrelevant changes of location, shape, and color

2010

View full text Add to dashboard Cite

show abstract

“…Pollatsek et al (1990) found that a preview aided object naming regardless of whether the target was in the same location or more than 58 apart. There is also evidence for separate buffers for spatial and object information from PET studies (Smith, Jonides, Koeppe, Awh, Schumacher & Minoshima, 1995) and ERP studies (Ruchkin, Johnson, Grafman, Canoune & Ritter, 1997).…”

Section: How Is Visual Spatial Information Tied To the Event Of A Heamentioning

confidence: 96%

Representation, space and Hollywood Squares: looking at things that aren't there anymore

2000

View full text Add to dashboard Cite

It has been argued that the human cognitive system is capable of using spatial indexes or oculomotor coordinates to relieve working memory load (Ballard, D. Here we examine the use of such spatial information in memory for semantic information. Previous research has often focused on the role of task demands and the level of automaticity in the encoding of spatial location in memory tasks. We present ®ve experiments where location is irrelevant to the task, and participants' encoding of spatial information is measured implicitly by their looking behavior during recall. In a paradigm developed from Spivey and Geng (Spivey, M. J., & Geng, J. (2000). submitted for publication), participants were presented with pieces of auditory, semantic information as part of an event occurring in one of four regions of a computer screen. In front of a blank grid, they were asked a question relating to one of those facts. Under certain conditions it was found that during the question period participants made signi®cantly more saccades to the empty region of space where the semantic information had been previously presented. Our ®ndings are discussed in relation to previous research on memory and spatial location, the dorsal and ventral streams of the visual system, and the notion of a cognitive-perceptual system using spatial indexes to exploit the stability of the external world. q

show abstract

“…They consisted of the latencies for the left-hand and right-hand responses and the mirror symmetry between this left-hand and right-hand response (figs. 3,11). The latencies were given in milliseconds.…”

Section: Taskmentioning

confidence: 99%

“…The TPC method is based on two principles that already have been used separately for EEG data. The first is the 'parallel coordinate' principle, which has been used to display time-voltage information, although the principle is not explicitly mentioned [3]. The second principle is a tiled layout, using a two-dimensional row-column arrangement, which is an extension of the usual onedimensional arrangement in columns for parallel coordinates.…”

Section: Introductionmentioning

confidence: 99%

Design and Evaluation of Tiled Parallel Coordinate Visualization of Multichannel EEG Data

Caat

Maurits

Roerdink

2007

IEEE Trans. Visual. Comput. Graphics

View full text Add to dashboard Cite

Abstract-The field of visualization assists data interpretation in many areas, but does not manage all types of data equally well. This holds in particular for time-varying multichannel EEG data. No existing method can successfully visualize simultaneous information from all channels in use at all time steps. To address this problem, a new visualization method is presented, based on the parallel coordinate method and making use of a tiled organization. This tiled organization employs a two-dimensional row-column representation, rather than a one-dimensional arrangement in columns as used for classical parallel coordinates. The usefulness of the new method, referred to as tiled parallel coordinates (TPC), is demonstrated by a particular type of EEG data. It can be applied to an arbitrary number of time steps, handling the maximum number of channels currently in use. An extensive user evaluation shows that, for a typical EEG assessment task, data evaluation by the TPC method is faster than by an existing clinical EEG visualization method, without loss of information. The generality of the TPC method makes it widely applicable to other timevarying multivariate data types.

show abstract

Multiple visuospatial working memory buffers: Evidence from spatiotemporal patterns of brain activity

Cited by 99 publications

References 43 publications

Feature binding in visual short-term memory is unaffected by task-irrelevant changes of location, shape, and color

Feature binding in visual short-term memory is unaffected by task-irrelevant changes of location, shape, and color

Representation, space and Hollywood Squares: looking at things that aren't there anymore

Design and Evaluation of Tiled Parallel Coordinate Visualization of Multichannel EEG Data

Contact Info

Product

Resources

About