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You are here: Home Data Sets Aplysia apl-1 (Aplysia 1) About apl-1

About apl-1

Description of dataset apl-1 (Aplysia 1).

Summary of the data

The data set was collected from fast-voltage sensitive dye recordings of the pedal ganglion of Aplysia californica during fictive escape locomotion. The neural activity is described by spike times of isolated, single neurons. There are 30 recordings from 10 different isolated brain preparations, and each recording is 125 sec long.  The data was recorded from either the left or right pedal ganglion, and the number of neurons range from 75 – 160, for a total of 1131 neurons across the ten preparations.  Scripts for visualization of the spike data, the maps of the neuron locations on the ganglion surface, and to visualize some of the raw data are provided. These data are the basis for the following paper, which contains a detailed description of the methods and results: 

Bruno AM, Frost WN, and Humphries MD. A spiral attractor network drives rhythmic locomotion. bioRxix. doi: 10.1101/104562, 2017. 

Format of the data

The data are provided in MATLAB file format, with exception raw data files which are in .txt files. Total size of the data is about 6.5GB compressed. Almost all of that is raw data. Details of the data format are given in the document linked to from the bottom of this page.

Conditions for using the data

If you publish any work using the data, please cite the publication above (Bruno AM, Frost WN, and Humphries MD, 2017) and also cite the data set in the following:

Angela M. Bruno; William N. Frost (2017); Voltage sensitive dye recording of multiple bouts of escape locomotion in the pedal ganglion of Aplysia californica.

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 (

How to download the data

Data may be downloaded from:
A account is required. See the download link for more instructions.

Getting help using the data

If you have questions about using the data, please post them on the forum for using data sets.

Documentation file

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