ECG & EEG features for mental workload and multilevel stress classification in different sexes
Notice bibliographique
Résumé
The data were collected from 66 healthy university students (21 males, 24 females in the follicular phase of the menstrual cycle, and 21 females in the luteal phase of the menstrual cycle) . The Montreal Imaging Stress Task (MIST) was modified and used in this study. A series of computer-based mental arithmetic tasks is designed to evaluate responses in control and stressful conditions. The experiments thus conducted in two separate sessions for the two conditions, which were two weeks apart. Each of the 2 sessions consisted of 7 periods: training, eyes open (EO), mental arithmetic task (MAT) on 4 consecutive levels of difficulty (arithmetic calculation level 1, AC1–arithmetic calculation level 4, AC4), and recovery. The control condition started with a training period to familiarize the subject with the experimental procedure, during which ECG and EEG signals were not recorded. During this period, the subject was presented with a series of computerized sampled questions at 4 difficulty levels of mental arithmetic tasks. Answer choices for every question were displayed on a computer screen in a sequence of integers between 0 and 9. The subject was requested to use a wireless computer mouse to click on the correct answer. Following the training period, the recordings started, and the subjects were asked to sit in a relaxed position with no movement and to focus on a black dot displayed on a computer screen for 5 minutes (the eye-open, EO, period). These requirements were critical to constructing a reliable EEG baseline with the minimum amount of artifacts caused by eye and body movements. After that, an instruction to perform mental arithmetic calculations was shown on the computer screen. The mental arithmetic task is composed of 4 levels of difficulty. Each level lasted 5 minutes. Level 1 (Arithmetic Calculation Level 1 – AC1): addition (+) and subtraction (-) of 3 single-digit numbers, e.g., 7-4+1. Level 2 (Arithmetic Calculation Level 2 – AC2): addition (+), subtraction (-), and multiplication (x) of 3 single- and double-digit numbers, e.g., 6x8-30. Level 3 (Arithmetic Calculation Level 3 – AC3): addition (+), subtraction (-), and multiplication (x) of 4 single- and double-digit numbers, e.g., 35+10-4*8. Level 4 (Arithmetic Calculation Level 4 – AC): addition (+), subtraction (-), multiplication (x), and division (/) of 4 single- and double-digit numbers, e.g., 96/4x2-11. No time limit or negative feedback messages were given to the subjects. After each question, the correct/incorrect message was displayed. After the AC4 period, the subjects relaxed and sat still for 5 minutes (the recovery period). ECG and EEG signals were recorded from the beginning of the EO period until the end of the recovery period. The protocol for the mental-stress condition was the same as it was for the control condition, but with a time limit and social evaluative threat components introduced. Several negative feedbacks were introduced to actively induce stress.
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Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,001 | 0,000 |
| Science ouverte | 0,001 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,001 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,001 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».