The Index of Cognitive Activity - Eligibility for task-evoked informational strain and robustness towards visual influences

Various researchers have proposed pupillometric indicators to assess a person's cognitive strain. However, distinguish the variation of pupil light response from psychosensory in experimental field conditions is challenge. The Index Cognitive Activity (ICA) addresses this problem by wavelet separation. This research investigates ICA's sensitivity for multiple level task-evoked activity and visual influences concerning informational work tasks. Objective subjective measures assessed strain participants (N = 22) during various In first experiment, mental arithmetic tasks were used induce different levels activity. second screen polarity presentation information investigated 18). results indicate that eye metrics are rarely sensitive slight variations task difficulty. Moreover, ICA likely be towards constant illumination shows tendencies regarding changes displayed information. Possible ramifications objective assessment discussed.