Download Report IEEE DataPort : APURE - video of pupil response after audio stimulation - 2025
XLSX, MP4 by Davide La Rosa, Luca Bruschini, Maria Paola Tramonti Fantozzi, Paolo Orsini, Mario Milazzo, Antonino Crivello
Information
Format: XLSX, MP4 Publisher: IEEE DataPort Publication Date of the Electronic Edition: 12/12/2025
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ISBN: 10.21227/b8nt-6e10
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Description
Pupil size was continuously monitored using Pupil Core eye-tracking glasses (Pupil Labs GmbH, Berlin, Germany), which connected to a laptop via USB. The system includes two infrared (IR) cameras for real-time eye imaging and a visible light camera on the front bar to capture the field of view.Recorded videos were analyzed using the Pupil Player software provided by the manufacturer. This software detects pupil shape and computes pupil diameter in pixels, employing a 3D eyeball model to correct for perspective distortion. Each measurement is assigned a confidence score (range: 0 to 1) reflecting the reliability of the detection algorithm. Based on both the manufacturer’s recommendations and empirical evaluation, a confidence threshold of 0.8 was applied to define valid measurements. The software also automatically detects blinks, identified as periods when the pupil is partially or fully occluded by the eyelids.Pupil size was recorded continuously for 4 min in silence (Baseline condition). Subsequently, auditory stimuli were delivered every 4 s for another 4 min (Audio condition). Each participant received 60 auditory stimuli through a headset.Each session produced two datasets—one for each pupil—containing the diameter (in pixels), confidence index, blink events, audio stimulus markers, and artifacts, sampled at ~62 Hz over the 4-min recording duration. Pupil size was consistently recorded in pixels. Data points flagged as blinks or artifacts (confidence < 0.8) were linearly interpolated using adjacent valid points.
$15
$3Discount Coupon
Delivery time: Maximum 24 hours