Cited by 100Visual perception and processing mechanismsNeuroscience and Neuropharmacology ResearchNeural dynamics and brain function

Cholinergic Enhancement Reduces Spatial Spread of Visual Responses in Human Early Visual Cortex

Open access
Silver, Michael A., Shenhav, Amitai, D'Esposito, Mark·2008·Neuron

Abstract

Animal studies have shown that acetylcholine decreases excitatory receptive field size and spread of excitation in early visual cortex. These effects are thought to be due to facilitation of thalamocortical synaptic transmission and/or suppression of intracortical connections. We have used functional magnetic resonance imaging (fMRI) to measure the spatial spread of responses to visual stimulation in human early visual cortex. The cholinesterase inhibitor donepezil was administered to normal healthy human subjects to increase synaptic levels of acetylcholine in the brain. Cholinergic enhancement with donepezil decreased the spatial spread of excitatory fMRI responses in visual cortex, consistent with a role of acetylcholine in reducing excitatory receptive field size of cortical neurons. Donepezil also reduced response amplitude in visual cortex, but the cholinergic effects on spatial spread were not a direct result of reduced amplitude. These findings demonstrate that acetylcholine regulates spatial integration in human visual cortex.

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Integrity signals

Registry

Crossref · 10.1016/j.neuron.2008.09.038

Cites

68 of 68 references verified0 citation errors · 0 not checkable

Statistics

Claims the paper makes

The claims and statistics of this paper haven’t been checked yet.

Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.

A few free checks a day · papers already verified open instantly · results are public

Claims other papers make about this one

Each is checked against this paper’s own text: does it say what the citing paper says it does?

  • Enhanced attention to stimuli is a key mechanism contributing to the effects of physostigmine on encoding, mediated by frontoparietal as well as sensory and sensory-associational areas.

    “Furthermore, several studies identified enhanced attention to stimuli as a key mechanism that contributes to the effects of physostigmine on encoding, and determined that frontoparietal as well sensory and sensory-associational areas mediate these effects (e.g., Bentley et al, 2003, 2008; Furey et al, 2008; Silver et al, 2008).”

    From Modes and models of forebrain cholinergic neuromodulation of cognition (2011) · cites this paper as Silver et al, 2008

Self-check

Percentages, sums and reported differences re-computed from the paper’s own numbers.

The self-check needs the paper’s full text.

Cites

Flagged first, then by citations

Cited by

Sorted by citations

Authors
Silver, M. A., Shenhav, A., & D'Esposito, M.
Affiliations
University of California, Berkeley (US)
Corresponding author
Silver, Michael A.
Venue
Neuron
Publisher
Elsevier BV
Published
2008-12
Volume
60
Issue
5
Pages
904-914
ISSN
0896-6273 (ISSN-L)
OpenAlex
W2121194451
Cited by
100
References
68
Citations by year
2026: 2 · 2025: 2 · 2024: 2 · 2023: 10 · 2022: 4 · 2021: 5 · 2020: 7 · 2019: 4 · 2018: 4 · 2017: 10 · 2016: 4 · 2015: 3 · 2014: 7 · 2013: 10 · 2012: 10
FWCI
2.76
Type
journal article
Language
en
Open access
Locations
  • Neuron (publishedVersion)
  • PubMed (publishedVersion)
  • Europe PMC (PubMed Central) (acceptedVersion)
  • PubMed Central (acceptedVersion)
Funders
National Institute of Mental Health (R01MH063901, R01-MH63901)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Visual perception and processing mechanisms
  • Life Sciences › Neuroscience › Cellular and Molecular Neuroscience › Neuroscience and Neuropharmacology Research
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Neural dynamics and brain function
Keywords
acetylcholine, cholinergic stimulation, donepezil, cholinesterase inhibitors, early visual cortex, receptive field size, spatial integration, thalamocortical transmission, intracortical connections, human visual cortex
MeSH terms
Donepezil, Acetylcholine, Brain Mapping, Cholinesterase Inhibitors, Double-Blind Method, Eye Movements, Female, Humans, Image Processing, Computer-Assisted, Indans, Magnetic Resonance Imaging, Male, Oxygen, Photic Stimulation, Piperidines, Psychophysics, Time Factors, Visual Cortex, Visual Pathways

About these checks

Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.

Statistics and arithmetic are recomputed, not judged.

Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.

What counts as a claim ›How we measure confidence ›How we check this ›

Are you an author, or do you see a problem with this page? Request a review