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Related Concept Videos

Role of Cerebellum and Prefrontal Cortex in Memory01:14

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The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
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Working memory refers to a combination of components, including short-term memory and attention, that allow an individual to hold information temporarily as we perform cognitive tasks. It is an essential cognitive function that enables the execution of complex tasks such as problem-solving, comprehension, and reasoning. Unlike short-term memory, which simply involves the storage of information for a brief period, working memory involves the active manipulation and processing of this...
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Working Memory Training for Older Participants: A Control Group Training Regimen and Initial Intellectual Functioning Assessment
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Basal forebrain activation improves working memory in senescent monkeys.

Kendyl R Pennington1, Luca Debs2, Sophia Chung3

  • 1Dept Neuroscience and Regenerative Medicine, Medical College of Georgia, Augusta University, Augusta, GA.

Biorxiv : the Preprint Server for Biology
|November 22, 2024
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Summary
This summary is machine-generated.

Daily brain stimulation improved working memory in aging monkeys, retaining benefits long-term. This basal forebrain stimulation also enhanced brain health markers, suggesting a potential treatment for cognitive decline.

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Area of Science:

  • Neuroscience
  • Aging Research
  • Cognitive Science

Background:

  • Brain aging is linked to cognitive decline and dementia risk.
  • Degeneration of the basal forebrain cholinergic system is common in aging and dementia.
  • Executive function is impaired across the lifespan and in disease states.

Purpose of the Study:

  • To test intermittent basal forebrain stimulation for improving cognition in senescent monkeys.
  • To investigate the mechanisms of action for this brain stimulation technique.

Main Methods:

  • Senescent monkeys received one-hour daily intermittent basal forebrain stimulation.
  • Cognitive performance, specifically working memory duration, was assessed.
  • Cerebrospinal fluid and glucose utilization were measured to explore mechanisms.

Main Results:

  • Stimulation improved working memory duration within 8-12 weeks, with sustained benefits after stimulation ceased.
  • Peak improvements were observed in the initial four weeks of stimulation.
  • Brain stimulation increased tissue plasminogen activator, linked to NGF and BDNF, and improved glucose utilization.

Conclusions:

  • Intermittent basal forebrain stimulation effectively improves executive function in aging.
  • This stimulation approach may reverse some aspects of brain aging and cognitive decline.
  • The findings suggest a potential therapeutic strategy for age-related cognitive impairment.