ArticleScientific reports2021
Effects of muscarinic and nicotinic receptors on contextual modulation in macaque area V1.
Article in Scientific reports, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
3 citing papers in PubMed, 2 citations in OpenAlex.
- Nicotine causes highly localized and tuned changes in thalamocortical gain that cascade strongly and selectively through the cortical circuit.bioRxiv : the preprint server for biology · 2026Article
- M2 receptors are required for spatiotemporal sequence learning in mouse primary visual cortex.Journal of neurophysiology · 2024Article
- Dynamic Network Connectivity: from monkeys to humans.Frontiers in human neuroscience · 2024Review
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Authors and funding
2 authors at 2 institutions in 2 countries.
Funding
Abstract
Context affects the salience and visibility of image elements in visual scenes. Collinear flankers can enhance or decrease the perceptual and neuronal sensitivity to flanked stimuli. These effects are mediated through lateral interactions between neurons in the primary visual cortex (area V1), in conjunction with feedback from higher visual areas. The strength of lateral interactions is affected by cholinergic neuromodulation. Blockade of muscarinic receptors should increase the strength of lateral intracortical interactions, while nicotinic blockade should reduce thalamocortical feed-forward drive. Here we test this proposal through local iontophoretic application of the muscarinic receptor antagonist scopolamine and the nicotinic receptor antagonist mecamylamine, while recording single cells in parafoveal representations in awake fixating macaque V1. Collinear flankers generally reduced neuronal contrast sensitivity. Muscarinic and nicotinic receptor blockade equally reduced neuronal contrast sensitivity. Contrary to our hypothesis, flanker interactions were not systematically affected by either receptor blockade.
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