PsPM-PIT2 dataset ================== Repository Version: 2019.04.08 This dataset consists of a three session experiment conducted with 38 healthy unmedicated participants (22 females and 16 males aged 24.8 +/- 3.6). The sessions were recorded on the same day with a self decided break. The first session is an instrumental conditioning, the second a classical (Pavlovian) discriminant delay fear conditioning and the third a Pavlovian-to-instrumental transfer task. For all three sessions this dataset contains electrocardyogramm (ECG), pupil size (PSR), respiration, and skin conductance (SCR) measurements. For the fear conditioning session CS+/CS- are visual stimuli of differently colored backgrounds. US is a train of electric square pulses delivered with a constant current stimulator on participants' dominant forearm through a pin-cathode/ring-anode configuration. SOA between the CS and US is 3.5 s. ITI is randomly determined on each trial to be an integer between 7 - 11 s. The instrumental stimuli are two images of differently colored vending machines cuing if the machine required a coin to dispense a chocolate (Approach) or if a coin should be averted from the machine, to prevent an already dispensed chocolate from being crushed by a newly dispensed soft drink can (Withdraw). The operant task asks subjects to repeatedly press the space key (Go) or withhold any key press (NoGo) to win chocolates. In the instrumental conditioning session, subjects play the game with grey background, and in the Pavlovian-to-instrumental transfer session they play the same operant game but with CS colored backgrounds instead of grey background. -------------------------------------------------------------------------------- This repository is curated by the PsPM team, pspm.sourceforge.net -------------------------------------------------------------------------------- See the data repository (DOI 10.5281/zenodo.2641738) for publications associated with this data set. Please reference the first publication listed there, as well as the repository DOI, if you publish results based on this data set. -------------------------------------------------------------------------------- File Structure: -README.txt // This document -excludes.txt // List of excluded subjects for specific publications -CHANGES.txt // Changes between dataset versions -+Data // Folder Containing all data files |-PIT2_wdq_XX_snY.mat // 114 files holding measurements for SCR, ECG and respiration |-PIT2_cogent_XX_snY.mat // 114 files holding keyboard presses, behavioural, and CS/US information |-PIT2_pupil_XX_snY.mat // 114 files holding PSR measurements |-... ------------------------------------------------------------------------------- Data Files: - Files holding SCR, ECG, respiration traces, and time markers, recorded with WDQ software. - Skin conductance (channel 1) - Electrocardiogram (channel 2) - Respiration (channel 3) - Event markers used for synchronization with Cogent files, markers are set at onset of preview (phase 1 and 3) or CS presentation (phase 2) (channel 4) - Files holding keyboard presses and CS/US/ST information, recorded with Cogent 2000 software. The data file name is composed of: - PIT2 The dataset name - wdq/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 (pspm.sourceforge.net). All Matlab files are saved in MATLAB 9.4 (R2018a) format.