emotional_memory_neuronal_data/README.md

emotional_memory_neuronal_data

Data for "Neuronal population representation of human emotional memory"

Please follow this tutorial to download the dataset using Gin client. After installing the GIN client, download this repository using gin download --content to ensure you get the full files.

Neuronal spike trains were obtained using Combinato and its outputs are provided for the 5 subjects in the publication. After downloading the dataset, all results and figures can be reproduced using the code located in the GitHub repository.

Description of dataset and its organization

The folders enc=encoding and rec=recognition contain data for the respective memory tasks that were performed 24 hours apart.

Electrophysiology

For each subject, there are folders called uXXX# where u stands for microwire, XXX signifies the brain region and # ranges from 1-8 for the microwire identity. The brain regions are defined as follows:

• (Anterior) Hippocampus = "u" + ("HR"|"HL"|"AHR"|"AHL");
• (Posterior) Hippocampus = "u" + ("PHR"|"PHL");
• Amygdala = "u" + ("AR"|"AL");
• Entorhinal Cortex = "u" + ("ECR"|"ECL");
• Pararhinal cortex = "uPCL" (Only located in Patient1, not used)

Inside each folder, there are spike sorting results for both negative and positive spikes saved in Combinato format (for more details see their GitHub). Additionally, spike waveforms and spike times were saved in py_spikes_posneg_uXXX#.mat for each microwire.

Behavior

The file all_images.txt contains the image identities used in all sessions. The 229 images from the IAPS dataset are owned by the Center for the Study of Emotion and Attention and can only be obtained from them directly, and therefore, we only share the image identities. The additional 11 (neutral) images used in our study are provided in the 'images' folder. Additional files to understand the trial types are located inside the behavioral folder Enc for encoding and Rec for recognition e.g., emotional_memory_neuronal_data\rec\Patient1\Rec and described below:

• ft_trial_PatientID_final.mat contains the FieldTrip header from the NeuraLynx files, FieldTrip event structure, FieldTrip trial structure (trl in samples and trl_sec in seconds). This is used to synchronize behavior and electrophysiological data.
• log.res contains 3 columns corresponding to response (Remember, Know, Forgot or No Response), Reaction time (in msec), and total elapsed time (in msec, unused).
• IAPS_enc.mat and IAPS_rec.mat file contains indices (to index all_images.txt) for the image identity of each trial.
• enc_onsets.mat and rec_onsets.mat are MATLAB structs with fields containing the trial numbers for all trial types (e.g., eR: emotional remembered, nMiss: neutral missed, etc.).
• encode_list.txt contains the image identities for each trial. The recognition images are identified using IAPS_rec.mat to index all_images.txt.