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This database contains 222 studies, archived under the term: "cognition disorders"

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Effects of insulin and octreotide on memory and growth hormone in Alzheimer’s disease

Both insulin alone and the somatostatin analogue octreotide alone facilitate memory in patients with Alzheimer’s disease (AD). Since octreotide inhibits endogenous insulin secretion, the cognitive effects of insulin and octreotide may not be independent. This study tested the individual and interactive effects of insulin and octreotide on memory and plasma growth hormone (GH) levels in […]

Feasibility and effectiveness of a walking program for community-dwelling older adults with mild cognitive impairment

This study examined the feasibility and effect on aerobic fitness of a 1-yr, twice-weekly, group-based moderate-intensity walking program (MI-WP, n = 77) compared with a low-intensity activity program (LI-AP, n = 75) for community-dwelling older adults with mild cognitive impairment (MCI). Thirty participants did not start a program; median attendance in the other 122 participants […]

Cognitive and psychiatric effects of vitamin B12 replacement in dementia with low serum B12 levels: a nursing home study

Background: The aim of this study is to determine whether B12 replacement would ameliorate cognitive and psychiatric symptoms in elderly subjects with dementia and low serum B12 levels.; Methods: A test group (n = 28) of nursing home residents with low serum B12 levels (300 pg/mL) were evaluated by blinded raters while the test group […]

Ginkgo biloba for preventing cognitive decline in older adults: a randomized trial

Context: The herbal product Ginkgo biloba is taken frequently with the intention of improving cognitive health in aging. However, evidence from adequately powered clinical trials is lacking regarding its effect on long-term cognitive functioning.; Objective: To determine whether G. biloba slows the rates of global or domain-specific cognitive decline in older adults.; Design, Setting, and […]

Long-term effects of rivastigmine capsules in patients with traumatic brain injury

Objective: To investigate the safety, tolerability and efficacy of rivastigmine capsules (3-12 mg/day) in a 26-week, multi-centre, open-label extension of a double-blind study.; Methods: Patients with traumatic brain injury (TBI) and persistent cognitive impairment who had received rivastigmine (3-6 mg/day) or placebo for 12 weeks could enter the extension study and receive rivastigmine (< or […]

Survival of community-dwelling older people: the effect of cognitive impairment and social engagement

Objectives: To examine the association and interaction between cognitive impairment and social support and mortality.; Design: Prospective cohort study.; Setting: Fifty-three family practices in the United Kingdom.; Participants: Community-dwelling people (aged > or =75) participating in the Medical Research Council Trial of the Assessment and Management of Older People in the Community (10,720 individual subjects […]

Does auditory rhythmical cueing improve gait in people with Parkinson’s disease and cognitive impairment? A feasibility study

Gait and balance problems resulting from Parkinson’s disease (PD) are more common in people with PD and dementia (PDD), yet, it is unknown whether the benefits of cueing therapy for mobility generalize to them. We aimed to determine the feasibility and effectiveness of auditory cues to improve gait in PD and cognitive impairment (PD-CI). Nine […]

The effects of glucose ingestion and glucose regulation on memory performance in older adults with mild cognitive impairment

Background/objectives: Previous research investigating the impact of glucose ingestion and/or improvements in glucose regulation has found selective cognitive facilitation on episodic memory tasks in successful ageing and dementia. The present study aimed to extend this research to mild cognitive impairment (MCI).; Subjects/methods: In a repeated-measures design, 24 older adults with and 24 older adults without […]

Addenbrooke’s Cognitive Examination validation in Parkinson’s disease

Background: There is a clear need for brief, sensitive and specific cognitive screening instruments in Parkinson’s disease (PD).; Objectives: To study Addenbrooke’s Cognitive Examination (ACE) validity for cognitive assessment of PD patient’s using the Mattis Dementia Rating Scale (MDRS) as reference method. A specific scale for cognitive evaluation in PD, in this instance the Scales […]

Methodological improvements in quantifying cognitive change in clinical trials: an example with single-dose administration of donepezil

Objectives: Change in cognitive function in response to a pharmacologic challenge can be observed with greater sensitivity by employing cognitive tests with optimal psychometric properties and a statistical approach that more accurately accounts for individual variability in performance. To demonstrate this approach we examined the cognitive effects of a single acute dose administration of an […]

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