THE CONTRIBUTION OF THE ‘SECOND’ VISUAL SYSTEM TO DIRECTED VISUAL ATTENTION IN MAN
Abstract
The visual functions of a patient suffering from a brain lesion incorporating the left n. pulvinar was examined in order to assess the contribution of this structure to human vision. With the exception of the following abnormalities visual functions were normal. First, there was a decrease in the critical flicker frequency in the periphery (but not in the parafoveal region) of the right visual hemifield, that is, that contralateral to the pulvinar lesion. However, the second and most striking characteristic was--as shown by presenting visual stimuli bilaterally and simultaneously-a 'neglect' for the periphery of this contralateral visual half-field. This 'neglect' was a function of (a) position in the visual field (eccentricity), (b) stimulus properties (size and luminance), (c) temporal properties (length of presentation and interstimulus interval). In addition to this reduced capacity to detect stimuli appearing in the periphery of the right visual hemifield, there was also prolonged latency of visually evoked saccadic eye movements and a paucity of spontaneous eye movements directed towards the right visual hemifield. These results are interpreted in terms of a contribution of the n. pulvinar to the detection of light stimuli presented in the periphery of the visual field, and support the view that the tectopulvinar extrastriate visual pathway plays an important role in the control of visual attention.
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Damage to the pulvinar in humans can result in visual hemi-neglect, deficits in feature binding, or focal attention.
“Damage to the pulvinar in humans can result in visual hemi-neglect [44,45], deficits in feature binding [46] or focal attention [47].”
From Cerebral hierarchies: predictive processing, precision and the pulvinar (2015) · cites this paper as [44]
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- Authors
- ZIHL, J., & CRAMON, D. V.
- Affiliations
- Max Planck Institute of Psychiatry (DE)
- ORCID
- ZIHL, J.
- Venue
- Brain
- Publisher
- Oxford University Press (OUP)
- Published
- 1979
- Volume
- 102
- Issue
- 4
- Pages
- 835-856
- ISSN
- 0006-8950 (ISSN-L)
- 1460-2156
- OpenAlex
- W2046451366
- Cited by
- 120
- References
- 0
- Citations by year
- 2025: 1 · 2022: 1 · 2021: 1 · 2020: 1 · 2018: 4 · 2017: 1 · 2016: 3 · 2015: 1 · 2014: 2 · 2013: 3 · 2012: 1
- FWCI
- 2.41
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Brain (publishedVersion)
- PubMed (publishedVersion)
- HighWire Press Open Archive (submittedVersion)
- Funders
- Deutsche Forschungsgemeinschaft
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Life Sciences › Neuroscience › Cognitive Neuroscience › Spatial Neglect and Hemispheric Dysfunction
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Visual Attention and Saliency Detection
- Keywords
- pulvinar, visual attention, visual field neglect, critical flicker frequency, saccades, spontaneous eye movements, visual detection, brain lesions
- MeSH terms
- Attention, Dominance, Cerebral, Eye Movements, Female, Humans, Middle Aged, Motor Skills, Parietal Lobe, Pattern Recognition, Visual, Thalamic Nuclei, Visual Fields, Visual Perception
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