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Activity-Based Prospective Memory and Motor Sleep Inertia in Insomnia
Lorenzo Tonetti1, Miranda Occhionero1, Sara Giovagnoli1
1Department of Psychology "Renzo Canestrari", University of Bologna, 40127 Bologna, Italy.
Insomnia patients with maintenance or mixed phenotypes show impaired activity-based prospective memory upon waking. Motor and cognitive inertia are linked, particularly in these insomnia groups.
Area of Science:
- Cognitive Neuroscience
- Sleep Medicine
- Psychology
Background:
- Insomnia disorder presents with diverse phenotypes, impacting cognitive functions.
- Activity-based prospective memory and motor sleep inertia are crucial for daily functioning upon waking.
Purpose of the Study:
- To investigate activity-based prospective memory upon awakening.
- To examine the association between prospective memory and motor sleep inertia in different insomnia phenotypes.
Main Methods:
- 67 insomnia patients (categorized into sleep onset, maintenance, mixed, and negative misperception phenotypes) and 51 healthy controls participated.
- Actigraphy was used to measure activity-based prospective memory (time from sleep end to memory task initiation) and motor sleep inertia (motor activity in the first 60 min post-sleep).
Main Results:
- Patients with maintenance and mixed insomnia exhibited a longer latency for activity-based prospective memory compared to controls.
- A significant association was found between motor sleep inertia and prospective memory performance, with higher motor activity linked to earlier memory task initiation, extending over longer periods in maintenance and mixed insomnia.
Conclusions:
- Mixed and maintenance insomnia phenotypes demonstrate more pronounced cognitive inertia.
- A significant link exists between motor and cognitive inertia, with duration varying by insomnia phenotype.
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