Recollection Training in Healthy Older Adults and Older Adults With Amnestic Mild Cognitive Impairment
- Conditions
- AgingAmnestic Mild Cognitive Impairment
- Interventions
- Behavioral: Recollection TrainingBehavioral: Control
- Registration Number
- NCT00643266
- Lead Sponsor
- Baycrest
- Brief Summary
We have developed a training intervention that successfully improves older adults' memory. We have also shown that older adults whose memory is as good as younger adults' memory (Hi-Old) use an altered pattern of memory-related brain activity compared to younger adults, whereas healthy older adults with poorer memory (Lo-Old) do not. We have also shown that individuals with amnestic Mild Cognitive Impairment (aMCI) have impairments of conscious, effortful, Recollection-based memory processes, whereas their automatic, Familiarity-based memory processes are intact. Our primary current goal is to investigate whether our successful memory intervention will improve Recollection and produce induce altered patterns of brain activity in the Lo-Old and aMCI.
Young, Lo-Old, Hi-Old, and aMCI will be scanned using functional magnetic resonance imaging while performing two memory tasks. Half of the Lo-Old and half of the aMCI will then receive the memory intervention, while the other half in each group will receive a control program consisting of information and games about aging. The Lo-Old and aMCI will then be rescanned while performing the two memory tasks. We predict that the memory intervention will improve performance on a number of memory tasks, and will induce altered patterns of brain activity. In the Lo-Old, their brain activity after the memory intervention will look more like the Hi-Old, while brain activity will become more focal in the aMCI.
- Detailed Description
Not available
Recruitment & Eligibility
- Status
- COMPLETED
- Sex
- All
- Target Recruitment
- 91
- 65-90 years old
- English as a first language or learned before kindergarten
- Right handed
- Neurologic disorder
- Major medical disorder affecting cognition
- Psychiatric disorder
- Metal in the body that poses a hazard in the MRI scanner
Study & Design
- Study Type
- INTERVENTIONAL
- Study Design
- PARALLEL
- Arm && Interventions
Group Intervention Description 1 Recollection Training Recollection training via graduated increases in task difficulty, carried out over 36 sessions over 9 training days 2 Control Computer-delivered information sessions about memory and aging with Jeopardy-like games to engage participants
- Primary Outcome Measures
Name Time Method Recollection estimates Immediately post-training and three months post-training Recollection, defined as Correct "yes" responses to "Same" repetitions minus Incorrect "yes" responses to "Different" repetitions, as a function of condition (trained versus control), lag (3, 16) and time (pre-, post-, and 3 month follow-up)
- Secondary Outcome Measures
Name Time Method Transfer to other recollection-dependent task and to subjective memory measures Immediately post-training and three months post-training Source memory, self-ordered pointing, n-back, a Sternberg task, CVLT, an AB-AC test of proactive interference, the Memory Controllability Inventory, Multifactorial Memory Questionnaire (Ability and Contentment subscales), Meta-Memory in Adulthood questionnaire (locus of control, anxiety, and capability subscales), and an in-house measure of the efficacy of the control program
Brain activation as assessed by functional magnetic resonance imaging Immediately post-training Prefrontal (inferior, middle, and superior frontal gyri) activation for Different Repetitions minus Same Repetitions, as a function of group (trained versus control), lag (3, 16), and time (pre, post). Additional analyses will compare trained versus control older adults with younger adults on these measures at baseline (pre). Analyses will include an exploration of prefrontal laterality of the effects (left minus right), to see whether training induces greater bilaterality of activation.
Trial Locations
- Locations (1)
Baycrest
🇨🇦Toronto, Ontario, Canada