Data Structure

The dataset:

  • Consists of 18 compressed files, each corresponding to one of the 18 mice included in the dataset;

  • Comprises single-unit activity (SUA) and local field potentials (LFP) recorded using a Neuropixels probe during a behavioral task;

  • Task details and electrode placements are intentionally kept minimal to reduce biases and minimize workload;

  • Data were collected from 3 simultaneously recorded brain areas;

  • Every recording includes LFP (≥20 channels) and SUA (≥5 units, total of 1449 units) signals from each brain area;

  • The length of the recordings varies between 55 and 101 minutes.

For each mouse, the following data is provided:

Trial Data

Trial Data (.csv) - a spreadsheet containing trial-specific information, all aligned with the ephys data:

  • trial_start (s): Trial onset.

  • stim_start (s): Stimulus presentation.

  • outcome (s): Reward or punishment time.

  • trial_end (s): Trial conclusion (the trial length is variable).

  • Variable A: Binary behavioral variable.

  • Variable B: Binary behavioral variable.

  • Variable C: Behavioral variable (1–3).

Brain Area

Brain Area (.npy, .mat):

  • [1 × num_units] array with integer values (1–3), indicating the brain area in which a unit has been recorded.

  • [1 × num_units] array with integer values for cluster IDs.

Spikes

Spikes (.npy, .mat):

  • [1 × num_spikes] array with spike times (s).

Clusters

Clusters (.npy, .mat):

  • [1 × num_spikes] array linking each spike to a cluster ID.

Waveforms

Waveforms (.npy, .mat):

  • [num_units × 128] array of average waveforms for each unit, recorded at 30 kHz on the best detection channel.

  • The order of waveforms matches that of cluster IDs and brain areas in brain_area.

LFP

LFP (.npy, .mat):

  • lfp1, lfp2, lfp3 each contain [num_channels × timestamps] arrays of LFP signals.

  • The number of channels varies across brain areas and across mice. The minimum number of channels per brain area is 20.

  • Channels within a brain area are contiguous in space, but channels from different brain areas are not.

  • Channels within a brain area are ordered from the deepest to the most superficial with respect to the brain surface.

  • The dataset includes every other channel from the Neuropixels probe. The vertical spacing between recording sites is 20 µm.

  • The signal has been recorded with an external reference and has already undergone a preprocessing pipeline.

  • Sampling rate: 500 Hz.