Dataset of Reaction Times for the Study of Differential Functional Changes in Visual Performance During Acute Exposure to Microgravity Analogue and their Potential Links with Spaceflight-Associated Neuro-Ocular Syndrome

Title: "Dataset of Reaction Times for the Study of Differential Functional Changes in Visual Performance During Acute Exposure to Microgravity Analogue and their Potential Links with Spaceflight-Associated Neuro-Ocular Syndrome"
Zenodo DOI: 10.5281/zenodo.11840654

Contains: simple-reaction-times-VBRHDT-data.csv
Dateset of SRT (simple reaction time) values to visual stimuli in different positions in visual field, binocularly observed, in a microgravity analogue study, in four body positions (vertical, horizontal, -6 deg tild, -15 deg tilt). 
Total records contained: 3584.

Institutional Review Board Statement: The study was conducted in accordance with the Declaration of Helsinki, and approved by the Ethics Committee “Carol Davila” University of Medicine and Pharmacy Bucharest, Romania, 14877/26.05.2023. Data was collected in SpaceMed Laboratory , CIeH (Center for Innovation and eHealth) of UMF Carol Davila Bucharest, Romania.

Citation and Detailed description:  see "Differential Functional Changes in Visual Performance During Acute Exposure to Microgravity Analogue and their Potential Links with Spaceflight-Associated Neuro-Ocular Syndrome", 2024, by Iftime A, Tofolean IT, Pintilie V, Călinescu O, Busnatu S, Papacocea IR, under review. 

Structure: Dataset is in CSV (Comma-Separated Values) format, UTF-8 encoded, text field delimited with quotation marks, in tidy format; one row is one record from the SRT task, variables values are in columns). The first row is the variable name. The variable are:

1) "live_row"
- type:  integer numbers, sequential;
- values: the index (order) of each SRT measurement performed in a body position, by a participant (ID). The value is C-based (first measurement is "0", second measurement is "1", etc).

2) "response_time"
- type: real numbers, continuous values;
- values: response time recorded from the participant; values in miliseconds.

3) "target_position_x_deg"
- type: real numbers, categorical (4 values: +/- 18.478, +/- 0.75);
- values: horizontal visual angle, in visual degrees in the visual field, of the position of the stimulus. Screen coordinates are computed from "0" position, foveal fixation, positive values to the right, negative values to the left.

4) "target_position_y_deg"
- type: real numbers, categorical (2 values:  -0.75, -7.654);
- values: vertical visual angle, in visual degrees in the visual field, of the position of the stimulus. Screen coordinates are computed from "0" position, foveal fixation, positive values downward, negative values upward.
-Note: For the equivalent polar coordinates (as in planimetry testing) see Figure 2 of the mentioned paper. 

5) "Contrast_Weber_calibrated"
- type: real numbers, categorical (2 values:  50.58, 99.3);
- values: Measured Weber contrast of the visual stimulus shown, values in percents.

6) "hand"
- type: categorical, 1 value ("right");
- values: hand used by the participant during SRT task.

7) "body_position"
- type: categorical (4 values: "vertical (90 deg)", "horizontal (0 deg)", "inclined (-6 deg)", "inclined (-15 deg)" );
- values: Body position during the SRT task.

8) "ID(anon)"
- type: integer number, categorical, 8 values;
- values: anonymized ID of the participants in the study (8 persons).