Behavioral & Physiological Data

Behavioral Data

Behavioral response data are stored in beh/ directories within each session. These files capture task performance outside the BOLD time series (e.g., recognition judgments, timeline ordering).

File format

Each behavioral file consists of a paired TSV and JSON sidecar:

sub-03/ses-04/beh/
├── sub-03_ses-04_task-TB2AFC_run-01_beh.tsv
└── sub-03_ses-04_task-TB2AFC_run-01_beh.json

Tasks with behavioral files

Task	Sessions	Description
TB2AFC	ses-04 through ses-18	Two-alternative forced choice recognition test
FIN2AFC	ses-30	Final session 2AFC recognition
FINtimeline	ses-30	Temporal ordering judgment

Key columns (TB2AFC)

onset, duration, trial_type, modality, word, image1, image2, correct_resp, resp, resp_RT, trial_accuracy, enCon (encoding condition), reCon (retrieval condition), cueId, pairId.

Physiological Data

Physiological recordings are stored alongside functional data in func/ directories, using the BIDS _physio.tsv.gz + _physio.json format.

Scanner physiological monitoring

Cardiac, pulse oximetry, and respiratory signals recorded by the Siemens PMU system during scanning. Present primarily in trial-based sessions.

sub-03/ses-04/func/
├── sub-03_ses-04_task-TBencoding_run-01_recording-cardiac_physio.tsv.gz
├── sub-03_ses-04_task-TBencoding_run-01_recording-cardiac_physio.json
├── sub-03_ses-04_task-TBencoding_run-01_recording-pulse_physio.tsv.gz
├── sub-03_ses-04_task-TBencoding_run-01_recording-pulse_physio.json
├── sub-03_ses-04_task-TBencoding_run-01_recording-respiratory_physio.tsv.gz
└── sub-03_ses-04_task-TBencoding_run-01_recording-respiratory_physio.json

Recording	Column	Sampling (Hz)	Source
recording-cardiac	cardiac	1000	Siemens PMU
recording-pulse	pulse	1000	Siemens PMU
recording-respiratory	respiratory	1000	Siemens PMU

Scanner physio is most consistently available in trial-based sessions (ses-04 through ses-18). Availability varies by session and subject depending on equipment setup and signal quality.

Eye-tracking

Eye position and pupil size recorded with an SR Research EyeLink system during naturalistic movie-watching and free recall sessions.

sub-03/ses-19/func/
├── sub-03_ses-19_task-NATencoding_run-01_recording-eye_physio.tsv.gz
├── sub-03_ses-19_task-NATencoding_run-01_recording-eye_physio.json
├── sub-03_ses-19_task-NATretrieval_recording-eye_physio.tsv.gz
└── sub-03_ses-19_task-NATretrieval_recording-eye_physio.json

Recording	Columns	Sampling (Hz)	Source
recording-eye	eye1_x_coordinate, eye1_y_coordinate, eye1_pupil_size	1000	SR Research EyeLink

Eye-tracking data is trimmed to the scan window defined by scanner triggers (input=255). The StartTime in the JSON sidecar corresponds to the first BOLD volume onset.

Eye-tracking is primarily available in naturalistic sessions (ses-19 through ses-28). Raw EDF source files are preserved in sourcedata/sub-XX/ses-YY/eyetracking/.

Audio recordings

Verbal free recall recordings (WAV format) are stored in sourcedata and are not part of the BIDS raw dataset:

sourcedata/sub-03/ses-19/audio/
├── recording_mic_2025-04-01_13h37.55.955.wav
├── recording_mic_2025-04-01_13h39.37.413.wav
└── ...

Audio recordings are collected during naturalistic free recall runs (ses-19 through ses-28) and the final free recall session (ses-29).