NeuropixelsV1e Headstage Neuropixels 1.0 Probe

The following excerpt from the NeuropixelsV1e Headstage example workflow demonstrates Neuropixels 1.0 probe functionality by streaming and saving probe data.

The NeuropixelsV1eData operator generates a sequence of NeuropixelsV1DataFrames using the following properties settings:

• BufferSize is set to 36. Therefore, each frame will contain a [1 x 36 sample] Clock vector, a [384 channel x 36 sample] SpikeData matrix, and a [384 channel x 3 sample] LfpData matrix. The Neuropixels 1.0 probe samples AP data at 30 kHz per channel (LFP data is sampled at a rate of 1/12 of the rate AP data) so this corresponds to 1.2 ms of data.
• DeviceName is set to "HeadstageNeuropixelsV1e/NeuropixelsV1e". This links the NeuropixelsV1eData operator to the corresponding configuration operator.

Given the settings above, each frame will contain a [1 x 36 sample] Clock vector, a [384 channel x 36 sample] SpikeData matrix, and a [384 channel x 3 sample] LfpData matrix. This corresponds to 1.2 ms of data per data frame. LfpData has less samples than Clock and SpikeData because LfpData is sampled at a lower rate; AP data is sampled at 30 kHz while LFP data is sampled at 2.5 kHz.

The relevant members are selected from the NeuropixelsV1DataFrame by right-clicking the NeuropixelsV1eData operator and choosing the following Output members: Clock, SpikeData, and LfpData. The MatrixWriter operators save the selected members to files with the following format: np1-clock_<filecount>.raw, np1-spike_<filecount>.raw, and np1-lfp_<filecount>.raw, respectively.