Journal
BEHAVIOR RESEARCH METHODS
Volume -, Issue -, Pages -Publisher
SPRINGER
DOI: 10.3758/s13428-023-02292-1
Keywords
Pupillometry; Modeling pupil size; Pupillary light response; Open-DPSM
Categories
Ask authors/readers for more resources
This article introduces an open-source toolkit called Open-DPSM for modeling the changes in pupil size in response to dynamic visual inputs. The toolkit improves the prediction of pupil size changes and provides Python functions and a graphical user interface. Users can use the predicted pupil trace to mitigate the effects of low-level features or evaluate the efficacy of low-level feature manipulations.
Pupil size change is a widely adopted, sensitive indicator for sensory and cognitive processes. However, the interpretation of these changes is complicated by the influence of multiple low-level effects, such as brightness or contrast changes, posing challenges to applying pupillometry outside of extremely controlled settings. Building on and extending previous models, we here introduce Open Dynamic Pupil Size Modeling (Open-DPSM), an open-source toolkit to model pupil size changes to dynamically changing visual inputs using a convolution approach. Open-DPSM incorporates three key steps: (1) Modeling pupillary responses to both luminance and contrast changes; (2) Weighing of the distinct contributions of visual events across the visual field on pupil size change; and (3) Incorporating gaze-contingent visual event extraction and modeling. These steps improve the prediction of pupil size changes beyond the here-evaluated benchmarks. Open-DPSM provides Python functions, as well as a graphical user interface (GUI), enabling the extension of its applications to versatile scenarios and adaptations to individualized needs. By obtaining a predicted pupil trace using video and eye-tracking data, users can mitigate the effects of low-level features by subtracting the predicted trace or assess the efficacy of the low-level feature manipulations a priori by comparing estimated traces across conditions.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available