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About pvc-1

Information about the data including cells, stimuli, format of the data.

Summary of the data

Data Collection: The data presented here represent the responses of V1 populations of neurons to natural image sequences.  Data was obtained using 10 x 10 extracellular electrode arrays.  Normally about 50 electrodes provided reliable responses.  A description of surgical procedures, anesthesia, and the insertion of the arrays can be found in:

Precise Alignment of Micromachined Electrode Arrays With V1 Functional Maps. Ian Nauhaus and Dario L. Ringach. J Neurophysiol. 2007 May;97(5):3781-9. (Pubmed ID 17344376)

All recordings were performed on Old-world monkeys (Macaca fascicularis) in primary visual cortex (area V1).  Receptive fields were between 2 and 6 degrees in eccentricity. 

Visual stimulus:  Natural image sequences were generated by digitally sampling commercially available videotapes in VHS/NTSC format. A Silicon Graphics R10000 Solid Impact was used to sample frames at a spatial resolution of 320 × 240 pixels and at a temporal rate of 30 Hz. Thirty different segments of approximately 30-s duration were sampled from four different movies (Sleeper, Benji, Goldfinger and Sheakespere in Love), making a total of about 60 minutes of video.

Additional details are in this document.

Format of the data

The data consists of two main parts: stimulus files (which are jpeg images of the movie frames) and the neuronal responses which are in Matlab format.  Details are in the document linked to above.  Total space for all files is about 1.9GB.

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, post them on the forumPlease do not contact the data contributor directly with questions about the data.

How to cite the data

Publications created through usage of the data should cite the data set in the following recommended format:

Ringach, Dario; Nauhaus, Ian (2009): Single- and multi-unit recordings from monkey primary visual cortex.

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 (

Available file

crcns-pvc1-readme.pdf. (423.4 kB).
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