DOI: 10.5281/zenodo.13356484
title: Emotion Generation and Reappraisal

description: Explanation of Data Files 

With 

THE NEURAL CORRELATES OF EMOTION PROCESSING AND REAPPRAISAL AS REFLECTED IN EEG



The folder titled “stimuli_picture” contains three subsets of images corresponding to the conditions used in the ER task: NEU (Neutral), NGR (Negative Reappraisal), and NGW (Negative Watch).

The associated Excel file (“stimuli_picture”) provides detailed information on the selected pictures, including their names and normative ratings. These ratings include mean valence, standard deviation of valence, mean arousal, and standard deviation of arousal for each condition (NEU, NGR, NGW).

The associated Excel file (“intensity_response”), located in the folder “stimuli_picture”, contains data on each subject's ratings of the intensity of the emotional content for each condition (NEU, NGR, NGW). The file includes the following information: ID, group, response

When using the data in the Brain Vision Analyzer, edit the workspace by integrating the “Raw Files” from the “raw_data” folder and the “History Files” from the “import_marker” folder.
description: Materials

In the Emotion Regulation(ER) task, 30 neutral pictures and 60 negative pictures were taken from the International Affective Picture System (IAPS; Lang et al., 2005), the Nencki Affective Picture System (NAPS; Marchewka et al., 2014) and the Geneva Affective picture database (GAPED; Dan-Glauser & Scherer, 2011). The 30 neutral pictures were assigned to the neutral-watch condition (NEU). Two distinct sets of 30 negative pictures each were used: one set for the negative-watch condition (NGW) and the other for the negative-reappraisal condition (NGR). 

Note: In the NEU and NGW conditions participants were instructed to simply observe the picture and experience any emotions without attempting to change their emotions, whereas in the NGR condition participants were instructed to reinterpret the scene less negatively, aiming to reduce the intensity of the emotional content. The Excel file (stimuli_picture) includes the name of these selected pictures, normative ratings with valence, valence SD, arousal, and arousal SD for corresponding conditions(NEU, NGR, NGW)

Task Design

During the ER task, each trial began with a cue word (2000 ms), followed by fixation cross (1000 ms) and the presentation of the picture for 5000 ms. After each picture presentation and the application of the corresponding reappraisal strategy, participants were prompted to rate the intensity of the emotional content they experienced on a numerical scale ranging from 1 to 7. Following this rating, a 1000-ms fixation preceded the start of the next trial. Each condition consisted of 30 trials wherein the picture displayed from the corresponding picture set was selected. See figure 1 for details. All 90 trials were presented in a random order within a mixed block design. The different random presentation for each participant was set up to avoid systematic differences between the conditions. Stimuli were presented using E-prime 2.0 (Psychology Software Tools, Inc., Pittsburgh, PA).
description: EEG Data Recording

The “raw_data” folder, comprises the EEG raw data for two samples as “Emo01~19” (n = 19) and “p05~35” (n = 27). Two external electrodes were placed above and below the left eye to measure vertical eye movements, and two electrodes were positioned on the left and right outer edges of the eyes to measure horizontal eye movements. Two electrodes on the right and left mastoid bone were used for offline re-referencing. Data were collected at a sampling rate of 2048 Hz, and efforts were made to keep impedances below 10 kΩ. Specifically, for sample 1(“Emo01~19”), electrodes T7 and T8 were placed at locations FCz and PCz.

Marker Description for the EEG 

Refer to Table 1 to review the markers used in the ER task, which have been transformed (condition_marker) from the raw data to reach a consensus. For analysis, these markers have been organized and can be found in the “import_marker” folder. When using the data in the Brain Vision Analyzer, edit the workspace by integrating the “Raw Files” from the “raw_data” folder and the “History Files” from the “import_marker” folder.

Table 1. The detailed description of the markers used in the task






cue_marker



cue_word



condition_marker



condition





S 101



watch



S 1010



NEU: watch neutral picture





S 102



watch



S 1020



NGW: watch negative picture 





S 103



reappraisal



S 1030



NGR: reappraisal negative