Abstract

Background. In the context of a fast-paced lifestyle and high stress levels, assessing and managing psycho-emotional states has become an important task. Traditional methods, such as questionnaires, have limited accuracy due to the subjectivity of data, whereas physiological approaches, including the measurement of galvanic skin response (GSR), provide an objective assessment. However, existing devices for GSR recording are bulky and expensive, which limits their application. This article explores the possibility of using a portable biofeedback system (BFS) based on GSR.

Objective. Development and testing of a portable biofeedback system (BFS) based on GSR, which combines sufficient measurement accuracy, ease of use, and the ability to integrate into daily life.

Study Participants. A total of 43 individuals participated in the study.

Methods. Comparative and correlational analyses were performed on data obtained from a portable GSR sensor and a laboratory EEG (NVX36). Data acquisition took place during a psycho-emotional task. A study was conducted to determine the optimal sensor placement using descriptive and comparative methods. Regression analysis was performed to configure the mobile application algorithm. A visualization was developed within the application to assess the user's psycho-emotional state. Data visualization and graph analysis were employed at all stages.

Results. The developed sensor demonstrated results comparable to laboratory equipment, despite a slight delay in response. The fingers were identified to be the optimal placement for the sensor, as the signal from them is clearer and more stable. The mobile application algorithm effectively aids in training emotional self-regulation.

Conclusions. The portable BOS system based on GSR demonstrates sufficient accuracy and convenience, making it promising for everyday use. The results of this work can be applied to further research in the field of portable devices aimed at self-regulation training.