Replication data for: Eye tracking and machine learning to assess cognitive impairment in post-COVID-19 patients

Participants with Post-COVID condition taking part in the Nautilus study (ClinicalTrials.gov ID: NCT05307575) and the Rehab COVID (ClinicalTrials.gov ID: NCT05846126) recruited by the Consorci Sanitari de Terrassa (Terrassa, Barcelona, Spain) between November 2021 and February 2024 were invited to participate. The protocol was approved by the Drug Research Ethics Committee (CEIm) of Consorci Sanitari de Terrassa (02-20-107-070) and designed in accordance with the Declaration of Helsinki.

This dataset contains eye-tracking and neuropsychological assessment data collected from individuals with post-COVID-19 condition (PCC) as part of a study exploring the relationship between oculomotor metrics and cognitive performance.

Eye movement data were recorded using the EyeLink 1000 Plus system (SR-Research Ltd., Ottawa, Canada), and are provided in .edf file format.

Files beginning with “0” correspond to the following tasks:
Fixation
Smooth Pursuit
Pupil Light Reaction

Files beginning with “s” contain raw data for the saccade tasks, which include multiple paradigms.
Stimulus presentation was randomized per participant. A .mat file is provided containing:
The order of paradigm presentation
The order of stimulus presentation
Information about stimulus amplitude, direction, and inter-stimulus timing, all of which were randomized.

Neuropsychological Data
An accompanying .xlsx file includes participants’ scores from a battery of neuropsychological tests:

Digit Symbol Test
Digit Span Backward Test
Trail Making Test (Parts A and B)
Stroop Color and Word Test
Controlled Oral Word Association Test (COWAT)