task performance measures

[Anastasios-Polykarpos Athanasiadis]

Dear experts,

Regarding task performance from the task-fMRI cohort, I would like to
ask whether there are any response time measures for the MOTOR task.
Second, for the other tasks, from the default download I have only mean
(or median) reaction times, while for example here:
https://www.nature.com/articles/s41467-025-62491-6

they have reaction times per trial supposedly. How can we get these
measures? Is there another file that reports these measures?
Thanks in advance.

Best regards,
Anastasios

[Elam, Jennifer]

Hi Anastasios,

From the HCP S1200 Release Reference Manual p.45-51:

Motor

This task was adapted from the one developed by Buckner and colleagues (Buckner et al. 2011; Yeo et al. 2011). Participants are presented with visual cues that ask them to either tap their left or right fingers, or squeeze their left or right toes, or move their tongue to map motor areas. Each block of a movement type lasted 12 seconds (10 movements), and is preceded by a 3 second cue. In each of the two runs, there are 13 blocks, with 2 of tongue movements, 4 of hand movements (2 right and 2 left), and 4 of foot movements (2 right and 2 left). In addition, there are 3 15-second fixation blocks per run. This task contains the following events, each of which is computed against the fixation baseline:

Conditions (Blocked)

Left finger blocks

Right finger blocks

Left toe blocks

Right toe blocks

Tongue movement

Note: Due to the fact that there is no subject choice response for the motor task, we do not collect in-scanner task performance data (reaction time [RT] and accuracy) for it and there is not a MOTOR_Stats.csv file in the EPRIME EV data in {Subject_ID}/MNINonLinear/Results/tfMRI_MOTOR_{LR/RL}/EVs analogous to the other task scans.

The per trial performance data for the other tasks are in the unprocessed and preprocessed packages for individual subjects:

Unprocessed

{Subject_ID}/3T/tfMRI_[task_phaseencodingdirection]/LINKED_DATA/EPRIME directory (e.g. 100307/3T/tfMRI_WM_LR/LINKED_DATA/EPRIME)

Preprocessed {Subject_ID}/MNINONLinear/Results/tfMRI_[task_phaseencodingdirection]/EVs directory

(e.g. 100307/MNINONLinear/Results tfMRI_WM_LR/EVs)

Best,

Jenn

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From: Anastasios-Polykarpos Athanasiadis <athan...@gmail.com>
Sent: Friday, February 20, 2026 8:36 AM
To: hcp-...@humanconnectome.org <hcp-...@humanconnectome.org>
Subject: [hcp-users] task performance measures

 

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