BIOPAC® Systems, Inc. Logo

276 – Emotional State (Affect) Recognition via Physiological Measures & Processing

This application note is concerned with the implementation details of determining emotional state (“affect”) on the basis of three physiological measures—Electrodermal Activity (EDA, a.k.a GSR), Zygomaticus (EMG), and Corrugator (EMG)s—as suggested in prevailing theories of emotion:

  1. The James-Lange Theory of Emotion: Emotions occur as a result of physiological reactions to stimuli. Emotional state depends on how the subject interprets their own reaction to any specific event.
  2. The Cannon-Bard Theory of Emotion: Physiological reaction and emotional state occur simultaneously. Emotions occur when the thalamus activates the CNS in response to stimuli, which results in physiological reaction.
  3. Schachter-Singer Theory of Emotion: In response to stimuli, a physiological reaction occurs. To experience the reaction and categorize it as a specific emotion, the subject is required to identify the reason for their specific reaction.
physiological measures for emotional state

Affective states arise from the behavior of two independent neurophysiological systems, the activation (arousal) and valence systems. Affective states are a function of these two systems. The circumplex model is two dimensional, with activation and valence defined as orthogonal (perpendicular) axes.

Associated Applications

Spotlight On
MP160 with AcqKnowledge and Basic Scripting

MP160 Data Acquisition Systems

MP160 data acquisition and analysis systems with AcqKnowledge software provide a flexible tool for life science research. MP160 data acquisition workstations include all hardware, software, cables, and guides you need to get started. MP160 Data Acquisition Hardware—Ethernet-ready data acquisition and analysis unit can record multiple channels with differing sample rates; record at speeds up to 400 kHz (aggregate). […]

View All
Latest News

New Citations | BIOPAC in Stimulus Presentation Studies

BIOPAC provides software and hardware that allows research teams to study stimulus presentation data. Here are a few notable studies using BIOPAC equipment for research on stimuli’s effects using ECG and SCL data. Your Face Scares Me This study addressed the impact of individual differences in social anxiety by examining the effects of perceptual load and stimulus valence when […]

Electrocardiography Guide Now Available

BIOPAC’s comprehensive Introductory ECG Guide addresses fundamental to advanced concerns to optimize electrocardiography data recording and analysis. Topics include: ECG Complex; Electrical and Mechanical Sequence of a Heartbeat; Systole and Diastole; Configurations for Lead I, Lead II, Lead III, 6-lead ECG, 12-lead ECG, precordial leads; Ventricular Late Potentials (VLPs); ECG Measurement Tools; Automated Analysis Routines for extracting, […]

Read All
Request a Demonstration
Request a Demonstration