ArticleJournal of neurophysiology2017
Temporally evolving gain mechanisms of attention in macaque area V4.
Article in Journal of neurophysiology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 19 citations in OpenAlex.
- Stimulus representations in visual cortex shaped by spatial attention and microsaccades.Proceedings of the National Academy of Sciences of the United States of America · 2025Article
- Dynamic attention signalling in V4: Relation to fast-spiking/non-fast-spiking cell class and population coupling.The European journal of neuroscience · 2023Article
- The diachronic account of attentional selectivity.Psychonomic bulletin & review · 2022Review
- Pop-out search instigates beta-gated feature selectivity enhancement across V4 layers.Proceedings of the National Academy of Sciences of the United States of America · 2021Article
- A Stable Population Code for Attention in Prefrontal Cortex Leads a Dynamic Attention Code in Visual Cortex.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2021Article
- Different computations underlie overt presaccadic and covert spatial attention.Nature human behaviour · 2021Article
- Distinct population codes for attention in the absence and presence of visual stimulation.Nature communications · 2018Article
- Preparatory activity for purposeful arm movements in the dorsomedial parietal area V6A: Beyond the online guidance of movement.Scientific reports · 2018Article
- Inverted Encoding Models of Human Population Response Conflate Noise and Neural Tuning Width.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2018Article
Corrections and comments
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Authors and funding
4 authors at 2 institutions in 2 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Cognitive attention and perceptual saliency jointly govern our interaction with the environment. Yet, we still lack a universally accepted account of the interplay between attention and luminance contrast, a fundamental dimension of saliency. We measured the attentional modulation of V4 neurons' contrast response functions (CRFs) in awake, behaving macaque monkeys and applied a new approach that emphasizes the temporal dynamics of cell responses. We found that attention modulates CRFs via different gain mechanisms during subsequent epochs of visually driven activity: an early contrast-gain, strongly dependent on prestimulus activity changes (baseline shift); a time-limited stimulus-dependent multiplicative modulation, reaching its maximal expression around 150 ms after stimulus onset; and a late resurgence of contrast-gain modulation. Attention produced comparable time-dependent attentional gain changes on cells heterogeneously coding contrast, supporting the notion that the same circuits mediate attention mechanisms in V4 regardless of the form of contrast selectivity expressed by the given neuron. Surprisingly, attention was also sometimes capable of inducing radical transformations in the shape of CRFs. These findings offer important insights into the mechanisms that underlie contrast coding and attention in primate visual cortex and a new perspective on their interplay, one in which time becomes a fundamental factor.
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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.