Oudiette_N1Data

Dream EEG and Mentation (DREAM) data set ---Data set information--- Common name: Oudiette_N1Data Full name: N/A Authors: Célia Lacaux, Thomas Andrillon, Isabelle Arnulf & Delphine Oudiette Location: The Paris Brain Institute (France) Year: 2021 Set ID: 2 Amendment: 0 Corresponding author ID: 10 Previous publications: N/A Correspondence: Nicolas Decat (E: [e-mail]) ---Metadata--- Key ID: 2 Date entered: 2022-06-10T12:44:18+00:00 Number of samples: 252 Number of subjects: 63 Proportion REM: 0% Proportion N1: 6% Proportion N2: 9% Proportion W: 85% Proportion experience: 87% Proportion no-experience: 7% Proportion healthy: 100% Provoked awakening: Yes Time of awakening: Day Form of response: Free Date approved: 2022-06-14T10:27:11+00:00 ---How to decode data files--- N/A --Treatment group codes-- N/A ---Experimental description--- Data was collected as part of a study investigating the role of the falling-asleep process on creative insight. A creativity task was completed prior to and following a 30-minute daytime nap, during which subjects (N=63, 18-35yo) were sitting on a reclining chair. Mental content was probed 4 times every 6 minutes. For each probe, subjects were asked to describe out loud what went through their mind prior to the alarm. --DREAM categorization procedure-- We classified participants' reports as: - Experience (E): something (i.e., thoughts, imagery) went through their mind at the probe. - No Experience (NE): nothing went through their mind at the probe. - Experience Without Recall (WR): something went through their mind at the probe but they could not recall any mental content. Conscious experiences (E) were further defined as hypnagogic if it was “fleeting, involuntary, spontaneous, perceptual, and bizarre”, else they were defined as "waking thoughts". Note: Mental content is currently in French. ---Technical details--- No artefacts Note: In all recordings, EOG and EMG signals were clipped at 100uV. --Data acquisition-- 3 EEG electrodes (C3, O1, Fp1) 2 EOG 1 chin EMG 256Hz sampling rate --Data preprocessing-- 0.1-40Hz unstopped EEG frequency band Reference to mastoid (A2) Data are originally in EDF => chunked with FASST toolbox to get only the N1 episode that precedes the awakening & dream report (new format: .mat + .dat)