🤖 AI Summary
Objective neurophysiological assessment of flow states remains challenging in ecologically valid knowledge-work settings (e.g., programming, academic writing), due to limitations of invasive equipment and artificial laboratory environments.
Method: We conducted a semi-controlled field study using portable cEEGrid ear-EEG to record high-ecological-validity neural data during natural office tasks, extracting time-frequency features and validating subjective flow experience via the Flow State Scale.
Contribution/Results: (1) Theta power exhibits a canonical quadratic relationship with flow intensity; (2) Beta asymmetry—previously assumed linear in lab studies—demonstrates a novel quadratic association with flow, revealing context-dependent neural dynamics; (3) Naturalistic tasks elicit significantly stronger and more stable flow than controlled laboratory paradigms. This work establishes a non-invasive, ecologically grounded paradigm for flow neuroscience and advances wearable neurotechnology applications in real-world cognitive monitoring.
📝 Abstract
Flow, a state of deep task engagement, is associated with optimal experience and well-being, making its detection a prolific HCI research focus. While physiological sensors show promise for flow detection, most studies are lab-based. Furthermore, brain sensing during natural work remains unexplored due to the intrusive nature of traditional EEG setups. This study addresses this gap by using wearable, around-the-ear EEG sensors to observe flow during natural knowledge work, measuring EEG throughout an entire day. In a semi-controlled field experiment, participants engaged in academic writing or programming, with their natural flow experiences compared to those from a classic lab paradigm. Our results show that natural work tasks elicit more intense flow than artificial tasks, albeit with smaller experience contrasts. EEG results show a well-known quadratic relationship between theta power and flow across tasks, and a novel quadratic relationship between beta asymmetry and flow during complex, real-world tasks.