Automatic Cognitive Load Detection from Face, Physiology, Task Performance and Fusion During Affective Interference

Autor:	M. Sazzad Hussain, Rafael A. Calvo, Fang Chen
Rok vydání:	2013
Předmět:	Human-Computer Interaction Nonverbal communication Modality (human–computer interaction) Computer science Working memory Face (geometry) Classifier (linguistics) Physiology Interference (wave propagation) Software Cognitive load Task (project management)
Zdroj:	Interacting with Computers. 26:256-268
ISSN:	1873-7951 0953-5438
DOI:	10.1093/iwc/iwt032
Popis:	Cognitive load (CL) is experienced during critical tasks and also while engaged emotional states are induced either by the task itself or by extraneous experiences. Emotions irrelevant to the working memory representation may interfere with the processing of relevant tasks and can influence task performance and behavior, making the accurate detection of CL from nonverbal information challenging. This paper investigates automatic CL detection from facial features, physiology and task performance under affective interference. Data were collected from participants (n=20) solving mental arithmetic tasks with emotional stimuli in the background, and a combined classifier was used for detecting CL levels. Results indicate that the face modality for CL detection was more accurate under affective interference, whereas physiology and task performance were more accurate without the affective interference. Multimodal fusion improved detection accuracies, but it was less accurate under affective interferences. More specifically, the accuracy decreased with an increasing intensity of emotional arousal.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::110ef7fd32639ec479da8a2cbb927ad4 https://doi.org/10.1093/iwc/iwt032 Zobrazit plný text záznamu