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The cholinergic hypothesis of cognitive impairment caused by traumatic brain injury
Abstract
Cognitive impairments are among the most common neuropsychiatric sequelae of traumatic brain injury at all levels of severity. Cerebral cholinergic neurons and their ascending projections are particularly vulnerable to acute and chronic traumatically mediated dysfunction. In light of the important role of acetylcholine in arousal, attention, memory, and other aspects of cognition, cerebral cholinergic systems contribute to and may also be a target for pharmacologic remediation among individuals with post-traumatic cognitive impairments. This article will review the evidence in support of this hypothesis. Evidence of relatively selective damage to cholinergic injury, the development of persistent anticholinergic sensitivity, and the effects of cholinergic augmentation on memory performance are presented first. Thereafter, neuropathologic, electrophysiologic, and pharmacologic evidence of cholinergic dysfunction after traumatic brain injury in humans is reviewed. Finally, future directions for investigation of the cholinergic hypothesis and possible clinical applications of this information are discussed.
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“and a deficiency in cholinergic signaling probably contributes to these posttraumatic neurobehavioral deficits.17”
From Damage to Arousal-Promoting Brainstem Neurons with Traumatic Brain Injury (2016) · cites this paper as [17]
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Metadata
- Authors
- Arciniegas, D. B.
- Affiliations
- HealthONE Spalding Rehabilitation Hospital (US)
- Corresponding author
- Arciniegas, David B.
- ORCID
- Arciniegas, David B.
- Venue
- Current Psychiatry Reports
- Published
- 2003-09
- Volume
- 5
- Issue
- 5
- Pages
- 391-399
- ISSN
- 1523-3812 (ISSN-L)
- 1535-1645
- OpenAlex
- W2021978868
- Cited by
- 107
- References
- 86
- Citations by year
- 2026: 3 · 2025: 2 · 2024: 5 · 2023: 10 · 2021: 4 · 2020: 2 · 2019: 5 · 2018: 7 · 2017: 2 · 2016: 8 · 2015: 3 · 2014: 5 · 2013: 1 · 2012: 2
- FWCI
- 0.70
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Current Psychiatry Reports (publishedVersion)
- PubMed (publishedVersion)
- Topics
- Health Sciences › Medicine › Clinical Neurology › Traumatic Brain Injury Research
- Health Sciences › Medicine › Clinical Neurology › Traumatic Brain Injury and Neurovascular Disturbances
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Cognitive Functions and Memory
- Keywords
- traumatic brain injury, cognitive impairment, cholinergic hypothesis, acetylcholine, cholinergic neurons, memory, post-traumatic cognitive impairment, cholinergic dysfunction
- MeSH terms
- Acetylcholine, Animals, Brain, Brain Injuries, Cognition, Cognition Disorders, Electrophysiology, Humans, Receptors, Cholinergic
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