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Cognitive function in multiple sclerosis: a subcortical pattern of neuropsychological impairment?
C Caltagirone1, G A Carlesimo1, L Fadda1
1Neurologic Clinic, 2nd University of Rome, Ospedale S. Eugenio, P. le dell'Umanesimo, 10, 00144 Roma, Italy.
Behavioural Neurology
|February 4, 2014
Summary
Cognitive impairment in multiple sclerosis (MS) was assessed. Most patients showed specific deficits linked to frontal lobe damage, suggesting subcortical involvement in MS cognition.
Area of Science:
- Neuroscience
- Neurology
- Cognitive Psychology
Background:
- Multiple sclerosis (MS) is a demyelinating disease affecting the central nervous system.
- Cognitive impairment is a common symptom in MS, impacting daily functioning.
- Understanding the patterns of cognitive deficits is crucial for patient care.
Purpose of the Study:
- To evaluate the prevalence and nature of cognitive impairment in patients with clinically definite multiple sclerosis.
- To identify specific cognitive domains affected by the disease.
- To explore the relationship between observed deficits and current theories of cognitive function.
Main Methods:
- Administered a battery of neuropsychological tests to 25 patients diagnosed with clinically definite multiple sclerosis.
- Compared patient performance against established control group data.
- Focused on tests known to be sensitive to frontal lobe function.
Main Results:
- 16% of patients (4 out of 25) exhibited diffuse cognitive impairment.
- The majority of patients demonstrated specific deficits in cognitive tests sensitive to frontal lobe damage.
- Performance differences were noted when compared to control subjects.
Conclusions:
- Cognitive impairment in multiple sclerosis often manifests as specific deficits rather than diffuse impairment.
- Frontal lobe dysfunction appears to be a significant feature of cognitive impairment in MS.
- Findings support hypotheses implicating subcortical structures in the cognitive disturbances associated with MS.
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