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Sleep Memory Cues Do Not Boost Parkinson’s Motor Learning

Photoreal illustration of an older adult sleeping with overlay of memory and brain oscillation imagery, conveying sleep-based learning intervention.

Auditory targeted memory reactivation during a 2-hour nap did not improve motor retention in 20 Parkinson’s disease patients or 20 healthy older adults, even though the same cues changed sleep physiology by reducing spindle density and increasing slow-wave density.1 Research Highlights First Parkinson’s TMR test: Micca et al. studied 20 Parkinson’s disease patients and 20 …

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What are Hypnagogic Jerks? Twitches Before Sleep.

Hypnagogic jerks refer to involuntary bodily twitches, movements, or muscular jolts that occur during the transition from wakefulness to a sleeping state.  Most people are thought to experience them just moments before entering the first stage of sleep.  In some cases, hypnagogic jerks are also referred to as “sleep twitches” or “sleep starts,” but are …

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