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About spe-2

Information about spe-2 (simultaneous patch and extracellular 2).


Simultaneous extracellular and juxtacellular recordings were obtained from the cortex of ketamine-anesthetized rats (spontaneous activity). Extracellular recordings were carried either using polytrodes with 32 or 128 electrodes arranged in dense arrays. Twenty-two neurons were recorded with a distance less than 200 µm between the juxtacellular pipette tip and the closest extracellular electrode. For each paired-recording, we provide the extracellular recording and the corresponding juxtacellular recording. Detailed information about the dataset is described in:

Neto, J. P., Lopes, G., Frazão, J., Nogueira, J., Lacerda, P., Baião, P., … Kampff, A. R. (2016). Validating silicon polytrodes with paired juxtacellular recordings: method and dataset. Journal of Neurophysiology, 116(2), 892–903.

Moreover, we have a repository containing the code used in the above publication:

Format of the data.

The data is stored in binary format.  Details of the formats are in the given in the data description document, linked to at the bottom of this page. Total size of the data is about 75 GB

How to download the data.

The data must be downloaded from:

A account is required.  This link allows bulk downloading of multiple files using the download script as described in the "Alternative download method" section on the download page.

Getting help using the data.

You can get help with the data set by posting any questions on the forum for using data sets, or through direct email contact to or

How to cite the data

If you publish any work using the data, please cite the publications above (Neto et. al, 2016), as well as the dataset itself:

Joana P. Neto, Gonçalo Lopes, João Frazão, Joana Nogueira, Pedro Lacerda, Pedro Baião, Arno Aarts, Alexandru Andrei, Silke Musa, Elvira Fortunato, Pedro Barquinha, and Adam R. Kampff (2018); Polytrode extracellular recordings with paired juxtacellular recordings.

The above citation uses a Digital Object Identifier (DOI) which is assigned to the data set.  The DOI was created using DataCite ( and the California Digital Library, "EZID" system (

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