At present, this data set contains data from 575 neurons sampled at sites 1 - 4 shown in Figure 1. However, some neurons were incompletely studied and their data may need to be set aside depending upon the analysis. Spike latencies and spikes per discharge for off-focus inputs (IF, CH, IH) are not included because so few neurons responded to these stimulus sites. This study was performed entirely with an automated data collection system (see references below)
Figure 1. Left) Diagram of the left frontal hemisphere showing the sites (1-7) that were sampled in this and other studies. The cytoarchitectonic regions are labeled from left to right. (pcd) - post cruciate dimple. Right) Diagram of cross section of cortex along region labels at left.
These data have been prepared as a rectangular ASCII table to provide the most generality for import into a variety of data analysis systems. There is only one data BLOCK. The first link provides a list of symbol definitions and variable names with the encoding for the group variables.
The BLOCK contains zeros to fill out the table where there was no data. The users will have to make the required transformation to {null} for the data processing system they use.
The data file is in HTML with the data bracketed as TEXT rather than as an FTP site so that the user can actually look at the data before deciding to store them. Use your browser's 'File/ Save As' and assign a 'file name' to store a local copy. Then use a text editor to remove the HTML code at the beginning and end of the file as well as the column labels.
Data Block 01 - Primary Data & 2nd through 5th Spike Latencies
Harding, G. W. and A. L. Towe. 1976. An on-line real-time laboratory for single neuron studies. Comput. Biomed. Res. 9:471-501.
Harding, G. W., R. M. Stogsdill and A. L. Towe. 1979. Relative effects of pentobarbital and chloralose on the responsiveness of neurons in sensorimotor cerebral cortex of the domestic cat. Neuroscience 4:369-378.