Physiological computing is an interdisciplinary field that focuses on the development of computational systems and technologies that interact with and respond to the physiological signals of the human body. These systems use sensors and algorithms to detect, analyze, and interpret physiological signals in real-time, allowing for a more natural and intuitive interaction between humans and computers.

Main goal: To create intelligent systems that can adapt to the user's physiological state, enhancing user experience, performance, and well-being. This field draws on knowledge from various disciplines, including computer science, engineering, psychology, neuroscience, and human-computer interaction.

Key components include: - Physiological Sensors: To capture physiological signals from the human body. Examples include electrocardiogram (ECG) sensors, electroencephalogram (EEG) sensors, electromyogram (EMG) sensors, and galvanic skin response (GSR) sensors. - Signal Processing and Analysis: Physiological signals are processed and analyzed using computational techniques to extract meaningful information about the user's physiological state. This may involve filtering, feature extraction, pattern recognition, and machine learning algorithms. - Adaptive Systems: Physiological computing systems use the information obtained from physiological signals to adapt their behavior in real-time. For example, a computer interface may adjust its presentation based on the user's level of attention, stress, or cognitive workload.

Applications: Physiological computing has applications in various domains, including healthcare, education, entertainment, gaming, virtual reality, and human-computer interaction. For example, physiological computing technologies can be used to develop biofeedback systems for stress management, adaptive learning environments, and immersive gaming experiences.