PsPM-trSP4 dataset =================== Repository Version: 2020.01.29 This dataset includes skin conductance response (SCR) measurements for each of 42 healthy unmedicated participants (21 males and 21 females aged 25.2 +/- 4.0 years) in response to 38 face photographs (modified from the Karolinska Directed Emotional Faces set, KDEF), each presented once with angry, neutral, and fearful expression for 1 s each. Meanwhile, participants were listening to regular or random distractor sounds, as described in Bach et al. (2015). ITI was selected randomly on each trial from 7.5 s, 9.0 s, or 10.5 s (misprinted in the publications), plus a variable delay of around 0.1 s for image loading. The experiment was preceded by a 2-minute resting period and divided into 3 blocks, separated by resting periods. Each resting period begins and ends with an event marker in the SCR recordings. -------------------------------------------------------------------------------- This repository is curated by the PsPM team, bachlab.org/pspm -------------------------------------------------------------------------------- Dataset is described and used in following references: - Dominik R. Bach (2014) A head-to-head comparison of SCRalyze and Ledalab, two model-based methods for skin conductance analysis. Biological Psychology, 103, pp 63-68. DOI:10.1016/j.biopsycho.2014.08.006 - Dominik R. Bach & Erich Seifritz & Raymond J. Dolan (2015) Temporally Unpredictable Sounds Exert a Context-Dependent Influence on Evaluation of Unrelated Images. PloS one, 10:26098105, pp e0131065. DOI:10.1371/journal.pone.0131065 -------------------------------------------------------------------------------- File Structure: - README.txt // This document - Data // Folder Containing all data files - trSP4_acqmat_XX_snY.mat // 42 files holding measurements for SCR - trSP4_cogent_XX.mat // 42 files holding key presses, IAPS information, and demographics ------------------------------------------------------------------------------- Data Files: - Files holding SCR, heart beat, and time markers, recorded with spike software. - Skin conductance (channel 1) - Event markers used for synchronization with Cogent files, markers are set at cs presentation onset (channel 2) - Files holding keyboard presses, and IAPS information, recorded with Cogent 2000 software. Also contains demographic (age, sex) The data file name is composed of: - trSP4 The dataset name - spike/cogent The type of data recorded (see above) - XX The subject number - Y The session number" Data are stored as .mat files for use with MATLAB (The MathWorks Inc., Natick, USA) in a format readable by the PsPM toolbox (bachlab.org/pspm). All Matlab files are saved in MATLAB 9.7 (R2019b) format.