About v4-2
Summary of the data
These data comprise extracellular recordings of neural activity in visual areas V1 and V4 of macaque monkeys passively viewing drifting grating target stimuli in isolation and under conditions of crowding (in the presence of distractor stimuli). All recordings of neuronal populations are from chronically implanted microelectrode arrays in both cortical areas of 2 male macaque monkeys. Animals were required to maintain fixation on a central point while stimuli were presented over the population receptive fields. Stimuli were presented for 0.25 s. Reported values reflect the total spike count of each neuron during the stimulus presentation. Target orientation was varied across an 18-degree range across presentations and, on a subset of trials, targets were surrounded by drifting grating distractors that varied in target-distractor spacing. Within an individual session, these same stimuli were also shown rotated by 90 degrees in orientation, to minimize the effect of adaptation. All trials (target orientation, distractor spacing) were randomly interleaved. A total of 15 sessions are included in this data set.
Results from the experiments are described in:
Feature representation under crowding in macaque V1 and V4 neuronal populations.
Christopher A. Henry, Adam Kohn
Current Biology (in press, 2022)
Format of the data
The data is stored in Matlab files. Details about the data are in the document linked-to at the end of this page. Total data size is about 1.3 MB.
Conditions for using the data
If you publish any work using the data, please cite the publication above (Henry and Kohn 2022) also cite the data set using the following:
Christopher A. Henry, Adam Kohn (2022) Simultaneous extracellular recordings from visual areas V1 and V4 from macaque monkeys viewing crowded displays. CRCNS.org.
https://doi.org/10.6080/K0736P4H
The above citation uses a Digital Object Identifier (DOI) which is assigned to the data set. The DOI was created using DataCite (www.datacite.org) and the California Digital Library, "EZID" system (ezid.cdlib.org).
How to download the data
Data may be downloaded from:
https://portal.nersc.gov/project/crcns/download/v4-2
A CRCNS.org 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.
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