Physiological Arousal Detection

Context.

A proof-of-concept system synchronizing PPG/IR and galvanic skin response. Data moves from embedded collection to logging, preprocessing, feature extraction, and a supervised classifier.

Inside the work.

• Recorded labeled calm, stress-like activation, and recovery sessions.
• Explored smoothing, BPM estimation, variability, slopes, and signal statistics.
• Connected raw serial data to Python visualizations and model predictions.

Proof of concept for physiological arousal; not a medically validated stress assessment.