The DOI matches its Crossref record; 111 of the 111 references it cites were found in a registry or an index.
A neuronal model of attentional spotlight: parietal guiding the temporal
Abstract
Recent studies have reported an attentional feedback that highlights neural responses as early along the visual pathway as the primary visual cortex. Such filtering would help in reducing informational overload and in performing serial visual search by directing attention to individual locations in the visual field. The magnocellular (M) and parvocellular (P) subdivisions are two of the major parallel pathways in primate vision that originate in the retina and carry distinctly different types of information. The M pathway, characterized by its high sensitivity to movement and to low contrast stimuli, forms the predominant visual input into the dorsal, parietal stream in the neocortex. The P inputs, characterized by their colour selectivity and higher spatial resolution, are channeled mainly into the ventral, temporal stream. It is proposed that the attentional spotlight originates in the dorsal stream and helps in serially searching the field for conjunction of the relevant target features in the temporal stream, effectively performing a gating function on all visual inputs. This model predicts that a defect limited to the magnocellular or the dorsal pathway can lead to widespread deficits in cognitive abilities, including those functions that are largely based on parvocellular information. For example, the model provides a neural mechanism linking a peripheral defect in the magnocellular pathway to the reading disabilities in dyslexia. Even though there has been strong evidence for a magnocellular deficit in dyslexia, the paradox has been that the cognitive disability seems to be related to P pathway function. The scheme proposed here shows how M input may be vital for controlling sequential attention during reading.
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In the citing paper
“The M system is driven by neurons in the LGN with large cell bodies and, in general, conducts low-resolution visual information rapidly to cortex and is involved in initial attentional capture (typically by stimulus onset/offset and/or movement) and processing of overall stimulus organization (2–5).”
From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [3]
In the citing paper
“The M system is driven by neurons in the LGN with large cell bodies and, in general, conducts low-resolution visual information rapidly to cortex and is involved in initial attentional capture (typically by stimulus onset/offset and/or movement) and processing of overall stimulus organization (2–5).”
From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [3]
In the citing paper
“The M system is driven by neurons in the LGN with large cell bodies and, in general, conducts low-resolution visual information rapidly to cortex and is involved in initial attentional capture (typically by stimulus onset/offset and/or movement) and processing of overall stimulus organization (2–5).”
From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [3]
In the citing paper
“A fundamental role of the M system/dorsal stream might be to produce a low-resolution template of the visual scene that influences perceptual processes, such as categorization of natural images, object recognition, and perceptual grouping in the ventral occipito-temporal cortex, by allowing P pathway fine-detailed input to be used more effectively (3,75–80).”
From Visual perception and its impairment in schizophrenia (2008) · cites this paper as [3]
Citations
Cites
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Flagged first, then by citations
Research works printed but not linked: 5
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Cited by
Sorted by citations
The distinct modes of vision offered by feedforward and recurrent processing
Lamme, V. A. F., & Roelfsema, P. R. (2000) · Trends in Neurosciences · doi:10.1016/s0166-2236(00)01657-x · Cited by 2,338
Schultz, R. T. (2005) · International Journal of Developmental Neuroscience · doi:10.1016/j.ijdevneu.2004.12.012 · Cited by 1,071
Impaired processing of rapid stimulus sequences in dyslexia
Hari, R., & Renvall, H. (2001) · Trends in Cognitive Sciences · doi:10.1016/s1364-6613(00)01801-5 · Cited by 527
Visual perception and its impairment in schizophrenia
Butler, P. D., Silverstein, S. M., & Dakin, S. C. (2008) · Biological Psychiatry · doi:10.1016/j.biopsych.2008.03.023 · Cited by 472
Early-stage visual processing and cortical amplification deficits in schizophrenia
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Metadata
- Authors
- Vidyasagar, T. R.
- Affiliations
- Australian National University (AU)
- Corresponding author
- Vidyasagar, Trichur Raman
- Venue
- Brain Research Reviews
- Publisher
- Elsevier BV
- Published
- 1999-07
- Volume
- 30
- Issue
- 1
- Pages
- 66-76
- ISSN
- 0165-0173 (ISSN-L)
- OpenAlex
- W2138714875
- Cited by
- 296
- References
- 111
- Citations by year
- 2026: 2 · 2025: 4 · 2024: 5 · 2023: 3 · 2022: 7 · 2021: 9 · 2020: 8 · 2019: 11 · 2018: 6 · 2017: 10 · 2016: 6 · 2015: 5 · 2014: 10 · 2013: 13 · 2012: 18
- FWCI
- 1.13
- Type
- journal article
- Language
- en
- Open access
- closed
- Locations
- Brain Research Reviews (publishedVersion)
- PubMed (publishedVersion)
- ANU Open Research (Australian National University) (submittedVersion)
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
- Physical Sciences › Computer Science › Computer Vision and Pattern Recognition › Visual Attention and Saliency Detection
- Social Sciences › Psychology › Developmental and Educational Psychology › Reading and Literacy Development
- Keywords
- attentional spotlight, magnocellular pathway, parvocellular pathway, dorsal stream, ventral stream, visual pathway, dyslexia, reading, attentional gating, parallel visual pathways
- MeSH terms
- Animals, Attention, Feedback, Humans, Models, Neurological, Neurons, Parietal Lobe, Temporal Lobe, Vision, Ocular, Visual Pathways
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