Visual search asymmetries in three-dimensional space

Previc, Fred H.; Blume, Jennifer

doi:10.1016/0042-6989(93)90229-p

Cited by 79 publications

(75 citation statements)

References 24 publications

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“…This was based on the work of Previc (1990;Previc & Blume, 1993) who proposed that upper fields projected more to the object recognition systems of the temporal lobe, while lower fields project to the vision-for-action Fecteau et al, 2000). Such findings predict that inhibition in our studies should also be larger in the upper-field, and indeed this was confirmed.…”

Section: Discussionsupporting

confidence: 64%

“…Therefore, one characterization of the upper and lower visual fields is that the former is more concerned with object recognition, while the latter lower visual field is more concerned with computations of perception-for-action (Previc, 1990). For example, visual search for targets is faster when they are in the upper visual field (Previc & Blume, 1993). Of particular pertinence in the current context, search for faces is faster in the upper visual field (Fecteau, Enns, & Kingstone, 2000).…”

Section: Methodsmentioning

confidence: 99%

“…However, we also investigated a second closely related issue. Previc (1990;Previc & Blume, 1993) has reviewed evidence showing different processing biases in upper and lower visual fields.…”

Section: Methodsmentioning

confidence: 99%

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Retrieval of implicit inhibitory processes: The impact of visual field, object-identity, and memory dynamics

Kessler¹,

Tipper

2004

Visual Cognition

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After exogenously cueing attention to a peripheral location, the return of attention and response to the location can be inhibited. We demonstrate that these inhibitory mechanisms of attention can be associated with objects and can be automatically and implicitly retrieved over relatively long periods. Furthermore, we also show that when face stimuli are associated with inhibition, the effect is more robust for faces presented in the left visual field. This effect can be even more spatially specific, where most robust inhibition is obtained for faces presented in the upper as compared to the lower visual field. Finally, it is revealed that the inhibition is associated with an object's identity, as inhibition moves with an object to a new location; and that the retrieved inhibition is only transiently present after retrieval.

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Section: Discussionsupporting

confidence: 64%

Section: Methodsmentioning

confidence: 99%

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Retrieval of implicit inhibitory processes: The impact of visual field, object-identity, and memory dynamics

Kessler¹,

Tipper

2004

Visual Cognition

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“…Similarly, matching visual angle meant that the search arrays extended into the upper and lower portions of the visual field to an equivalent extent in both conditions, and thus the upper field bias previously reported for visual search (Previc, 1996;Previc & Blume, 1993) should not have influenced the results.…”

Section: Discussionmentioning

confidence: 99%

Near and far space: Understanding the neural mechanisms of spatial attention

Lane¹,

Ball²,

Smith³

et al. 2011

Human Brain Mapping

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Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details. ABSTRACTVisuospatial neglect is a multicomponent syndrome and one dissociation reported is between neglect for near (peripersonal) and far (extrapersonal) space. Owing to patient heterogeneity and extensive lesions it is difficult to determine the precise neural mechanisms underlying this dissociation using clinical methodology. In this study transcranial magnetic stimulation was used to examine the involvement of three areas in the undamaged brain while participants completed a conjunction search task in near and far space. The brain areas investigated were right posterior parietal cortex (rPPC), right frontal eye field (rFEF), and right ventral occipital cortex (rVO), each of which has been implicated in visuospatial processing. The results revealed a double dissociation whereby rPPC was involved for search in near space only, whilst rVO only became necessary when the task was completed in far space.These data provide clear evidence for a dorsal and ventral dissociation between the processing of near and far space, which is compatible with the functional roles previously attributed to the two streams. For example, the involvement of the dorsal stream in near space reflects its role in vision for action, since it is within this spatial location that actions can be performed. The results also revealed that rFEF is involved in the processing of visual search in both near and far space, and may contribute to visuospatial attention and/or the control of eye-movements irrespective of spatial frame. We discuss our results with respect to their clear ramifications for clinical diagnosis and neurorehabilitation.Lane, 3

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“…Visual search studies have shown both right and upper VF advantages (Efron, Yund, & Nichols, 1987;Previc & Blume, 1993 (Christman & Niebauer, 1997). Both upper and right VF advantages are seen for local processing, visual search, and categorical judgments, such as object identification, whereas lower and left VF advantages are reported for global processing and coordinate spatial judgments requiring visuomotor coordination, and global motion (Christman, 1993;Kosslyn, 1987;Niebauer & Christman, 1998;Previc, 1990).…”

Section: Introductionmentioning

confidence: 99%

Upper and lower visual field differences in perceptual asymmetries

Elias

2011

Brain Research

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Neurologically normal individuals show a leftward spatial bias and tend to collide with objects on the right side more frequently than on the left. The upper visual field is associated with extrapersonal space, and mediated by the ventral stream through parvocellular projections.The lower visual field is associated with peripersonal space, and mediated by the dorsal stream through magnocellular projections. Upper and lower visual field differences have been observed in perceptual asymmetries but results have been mixed. Object-and space-based coordinates also both influence the leftward bias; however their relative contributions are unknown as similar spatial conditions are often collapsed across. More left-side collisions emerged on a route following task in the lower visual field and more right-side collisions were seen in the upper visual field (Thomas, Stuckel, Gutwin, & Elias, 2009). Left-handers made more right-side collisions in the central condition, whereas right-handers showed no bias. Leftward biases on the greyscales task were stronger in the lower visual field; however no distance-based differences were observed (Thomas & Elias, 2010). A stronger spatial bias was found on the greyscales task, whereas a stronger object-based bias was found on the object luminosity task (Thomas & Elias, in press). When individual spatial conditions were examined, the image chosen most often was always located in the lower field. Stimulus type and spatial location interacted to determine which coordinate type contributes more strongly to leftward biases. We also found that the leftward bias on the greyscales task was stronger in the lower visual field during prolonged presentation and in the upper visual field during brief presentation. A global motion task was created to preferentially engage magnocellular projections to the dorsal stream. Isoluminant red/green and blue/yellow colour tasks, which preferentially engage parvocellular projections to the ventral stream, were also created. Leftward biases were seen on the greyscales and motion tasks. On an isoluminant colour task, biases were significantly weakened, suggesting

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Visual search asymmetries in three-dimensional space

Cited by 79 publications

References 24 publications

Retrieval of implicit inhibitory processes: The impact of visual field, object-identity, and memory dynamics

Retrieval of implicit inhibitory processes: The impact of visual field, object-identity, and memory dynamics

Near and far space: Understanding the neural mechanisms of spatial attention

Upper and lower visual field differences in perceptual asymmetries

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