Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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RECRUITING
20 participants
OBSERVATIONAL
2025-06-30
2026-07-31
Brief Summary
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Detailed Description
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Conditions
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Study Design
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COHORT
PROSPECTIVE
Study Groups
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WAKE - SLEEP
This group will start with the condition 1 " wake " (encoding+immediate recall in the morning (8 :00am) and delayed recall in the evening (8 :00pm)) and will end with the condition 2 " sleep " : (encoding+immediate recall in the evening (8 :00pm) and delayed recall in the morning (8 :00am))
Cognitive memory task on a computer
Encoding: (1) Participants will learn 60 associations between pairs of items (cue and target) that are presented sequentially at unique locations on a screen, in a given context. 30 pairs are presented once, and 30 pairs are presented repeatedly (4 times).
(2) After learning, the first recall phase begins after a short delay of 30 minutes: 50% of the pairs are tested in a similar way, this time with an assessment of contextual memory.
(3) The remaining 50% of pairs are tested after a 12-hour delay, involving either a day awake (condition 1) or a night asleep (condition 2).
Eye tracking
Eye-tracking will be carried out during the task to ensure that participants are focused on the task (quantification of the number and duration of eye fixations in the area of interest corresponding to the target presentation)
Questionnaires on task-related fatigue
Questionnaire on task-related fatigue (Likert-scale) will be completed by participants between blocks of items during the task
Questionnaire on task difficulty
Questionnaires on task difficulty (Likert-scale) will be completed by participants at the end of the task
Karolinska scale
Participants' state of sleepiness will be assessed at the beginning of each stage (encoding, immediate recall, delayed recall) using the Karolinska sleepiness scale
SLEEP-WAKE
This group will start with the condition 2 " sleep "and will end with the condition 1 " wake "
Cognitive memory task on a computer
Encoding: (1) Participants will learn 60 associations between pairs of items (cue and target) that are presented sequentially at unique locations on a screen, in a given context. 30 pairs are presented once, and 30 pairs are presented repeatedly (4 times).
(2) After learning, the first recall phase begins after a short delay of 30 minutes: 50% of the pairs are tested in a similar way, this time with an assessment of contextual memory.
(3) The remaining 50% of pairs are tested after a 12-hour delay, involving either a day awake (condition 1) or a night asleep (condition 2).
Eye tracking
Eye-tracking will be carried out during the task to ensure that participants are focused on the task (quantification of the number and duration of eye fixations in the area of interest corresponding to the target presentation)
Questionnaires on task-related fatigue
Questionnaire on task-related fatigue (Likert-scale) will be completed by participants between blocks of items during the task
Questionnaire on task difficulty
Questionnaires on task difficulty (Likert-scale) will be completed by participants at the end of the task
Karolinska scale
Participants' state of sleepiness will be assessed at the beginning of each stage (encoding, immediate recall, delayed recall) using the Karolinska sleepiness scale
Interventions
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Cognitive memory task on a computer
Encoding: (1) Participants will learn 60 associations between pairs of items (cue and target) that are presented sequentially at unique locations on a screen, in a given context. 30 pairs are presented once, and 30 pairs are presented repeatedly (4 times).
(2) After learning, the first recall phase begins after a short delay of 30 minutes: 50% of the pairs are tested in a similar way, this time with an assessment of contextual memory.
(3) The remaining 50% of pairs are tested after a 12-hour delay, involving either a day awake (condition 1) or a night asleep (condition 2).
Eye tracking
Eye-tracking will be carried out during the task to ensure that participants are focused on the task (quantification of the number and duration of eye fixations in the area of interest corresponding to the target presentation)
Questionnaires on task-related fatigue
Questionnaire on task-related fatigue (Likert-scale) will be completed by participants between blocks of items during the task
Questionnaire on task difficulty
Questionnaires on task difficulty (Likert-scale) will be completed by participants at the end of the task
Karolinska scale
Participants' state of sleepiness will be assessed at the beginning of each stage (encoding, immediate recall, delayed recall) using the Karolinska sleepiness scale
Eligibility Criteria
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Inclusion Criteria
* Hospitalized for video-EEG recording lasting at least 4 days
* Aged 18-65 years
Exclusion Criteria
* Refusal to participate
* Pregnant women, women in labor or nursing mothers
* Persons deprived of their liberty by judicial or administrative decision
* Persons under psychiatric care
* Persons admitted to a health or social institution for purposes other than research
* Adults under legal protection (guardianship, curatorship)
18 Years
65 Years
ALL
No
Sponsors
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Hospices Civils de Lyon
OTHER
Responsible Party
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Locations
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Service de neurologie fonctionnelle et d'épileptologie, Hôpital neurologique Pierre Wertheimer
Bron, , France
Countries
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Central Contacts
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Facility Contacts
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Other Identifiers
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2025-A00510-49
Identifier Type: OTHER
Identifier Source: secondary_id
69HCL25_0188
Identifier Type: -
Identifier Source: org_study_id
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