Prerequisites for Affective Signal Processing (Asp)

Physiological changes have long been associated with emotion. Although the relative role of cognitive versus physiological processes in emotion has been debated, it is acknowledged that in almost all cases, measurable physiological changes co-occur with emotion, for example: changes in heart rate, sweat level, muscle tension, breathing rate, facial expression and electrical activity in the brain. By sensing these changes we can hope to build computer systems that can automatically recognize emotion by recognizing patterns in these sensor signals that capture physiological responses. This chapter will give a detailed introduction to measuring physiological signals that reflect affect (emotion) with a focus on measuring cardiac activity and skin conductance. The discussion will include why these signals are important for measuring emotional activity, how they are most commonly measured, which features are most often extracted for use in recognition algorithms and the trade-offs between signal quality and wearability and convenience for different sensing systems.

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Cross-modal elicitation of affective experience

Mühl

Heylen

2009

2009 3rd International Conference on Affective Computing and Intelligent Interaction and Workshops

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In the field of Affective Computing the affective experience (AX) of the user during the interaction with computers is of great interest. Physiological and neurophysiological sensors assess the state of the peripheral and central nervous system. Their analysis can provide information about the state of a user. We introduce an approach to elicit emotions by audiovisual stimuli for the exploration of (neuro-)physiological correlates of affective experience. Thereby we are able to control for the affect-eliciting modality, enabling the study of general and modality-specific correlates of affective responses. We present evidence from self-reports, physiological, and neurophysiological data for the successful induction of the affective experiences aimed for, and thus for the validity of the elicitation approach.

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Prerequisites for Affective Signal Processing (Asp)

Cited by 6 publications

References 36 publications

Emotion in Human-Computer Interaction

Emotion in Human-Computer Interaction

Physiological Sensing of Emotion

Cross-modal elicitation of affective experience

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