Mind-wandering and Predictive Processes in Narcolepsy: a Putative Mechanism Through Covert REM Intrusions

The task involves the presentation of a visual stimulus in one of four horizontal locations on the screen, and participants are instructed to indicate the location of the target stimulus by pressing the corresponding key on the keyboard. In case of correct response, the target stimulus disappears, and after a 120 ms interstimulus interval, the next stimulus appears. In case of an incorrect response, the target stimulus remains in place until the first correct response. The stimuli follow a probabilistic eight-element sequence, with pattern and random elements alternating with each other. Each participant will be assigned to one of 24 possible sequences throughout the task. The ASRT task will be composed of 25 blocks, with each block containing ten repetitions of the eight-element sequence. After each block, participants will have to take a short break and answer the thought probes before continuing. All patients will perform the task one time.

"All patients will have to fill questionnaire at the beginning of the study~* Spontaneous and Deliberate Mind Wandering Scales (SDMWS)~* Epworth Sleepiness Scale~* Narcolepsy Severity Index~* Idiopathic Hypersomnia Severity Scale~* Hospital Anxiety and Depression scale~* Horne \& Ostberg questionnaire~* Attention Deficit Hyperactivity Disorder (ADHD) auto-evaluation~* Pittsburgh Sleep Quality Index~* Insomnia Severity Index~* Psychotic-like experiences scale"

A subset of patients in each arm will undergo polysomnography recording (EEG, EOG, EMG, ECG) during the ASRT