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Updated: Feb 3, 2026
10:59
Investigations on Alterations of Hippocampal Circuit Function Following Mild Traumatic Brain Injury
Published on: November 19, 2012
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Cognitive functioning following traumatic brain injury: The first 5 years
1Department of Psychology, Sunway University, No. 5 Jalan Universiti, Bandar Sunway, 47500 Selangor Darul Ehsan, Malaysia. Tel.: +60 3 7491 8622; Fax: +60 3 5635 8633;
Neurorehabilitation
|November 8, 2018
Summary
Cognitive deficits after severe traumatic brain injury (TBI) vary. While many recover, some patients experience long-term impairment, particularly in memory and attention, with some decline occurring years after injury.
Area of Science:
- Neuroscience
- Neurology
- Rehabilitation Medicine
Background:
- Traumatic brain injury (TBI) can lead to significant cognitive impairments.
- Understanding the long-term trajectory of cognitive deficits is crucial for patient recovery and management.
Purpose of the Study:
- To investigate the prevalence and severity of cognitive deficits 5 years after severe TBI.
- To describe changes in cognitive performance over time.
Main Methods:
- A longitudinal study involving 56 adults.
- Cognitive assessments conducted at 6 months, 1 year, and 5 years post-injury.
Main Results:
- Over 85% of patients showed no impairment in general intelligence, simple attention, or visual perception by 5 years.
- Significant impairment persisted in 28% for complex attention/verbal fluency and 60% for verbal memory.
- Deterioration in complex attention and verbal memory was observed between 1 and 5 years post-injury.
Conclusions:
- Cognitive outcomes following TBI are highly heterogeneous.
- Long-term cognitive deterioration can occur even years after the initial injury.
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