Activity of a pyramidal tract projecting cell (PTN) of motor cortex during walking on the flat surface and horizontal ladder with crosspieces 5, 12, and 18 cm wide. The cell was recorded in track 21 of Cat 7 (see cortical map). Latent period of cell’s response to stimulation of the pyramidal tract was 1.0 ms; collision test was satisfied. The cell was activated by manipulation of the contralateral shoulder.
This PTN was one of the 145 neurons, activity of which was analyzed during walking on the flat surface and ladder-5 in respect to somatosensory receptive field properties and reported in Stout and Beloozerova, 2012. Excel data spreadsheet for this paper, containing, among that of 145 other neurons, the 20 bin histogram of the activity of this PTN during flat surface and ladder-5 walking along with several evaluations of the histogram is here. PTN 3187 is cell #45 by count on the second Excel sheet entitled “Selected for paper, n=145”. It can be followed on the other sheets of that Excel file by its unique number and the number of the recording file. PTN was recorded on channel 2.
The activity of this PTN was also analyzed in respect to walking on ladders with crosspieces 12 and 18 cm wide, and it was one of the 63 neurons, the activity of which in respect to the level of accuracy demand on stepping was evaluated and reported in Beloozerova et al, 2010. Excel data spreadsheet for this paper, containing, among that of 63 other neurons, the 10 bin histogram of the activity of this PTN during flat surface walking and walking on ladders with crosspieces 5, 12, and 18 cm wide along with several evaluations of the histogram is here.
walking_833 (flat surface and ladder-5 walking):
(1) main data file, clustered, Spike2
information file, Spike2
(2) main data file, clustered, txt
main data file, clustered, mat
(3) selected channels for locom_cat3M , txt
(4) spike rastes, .rs format, zipped (see how to plot rasters)
Thus, for this PTN flat surface and ladder-5 walking, the data include: (1) original recording in Spike2, which includes clustering of the PTN and VL cells by IB; (2) .txt and .mat exports of this entire recording; (3) a .txt export of only the times of spikes, the beginnings of swing and stance phases of the stride of the right forelimb; and moments of entering and exiting the test corridors; and (4) IB assessment of the activity of this PTN during flat surface and ladder-5 walking. Images below illustrate some of the walking-826 file data content. Actual data are in the links above.
walking_834 (flat surface and ladder-18 walking):
(1) main data file, only preliminary clustered, Spike2
information file, Spike2
(2) main data file, preliminary clustered, txt
main data file, preliminary clustered, mat
(3) selected channels for locom_cat3M, txt
walking_835 (flat surface and ladder-12 walking):
(1) main data file, not clustered, Spike2
information file, Spike2
(2) main data file, not clustered, txt
main data file, not clustered, mat
Final clustering for files 827 and 828 was not available at the time of data upload to the database. The recording is very good, however, so clustering of this file does not present any particular difficulty.
See examples of images that illustrate some of the walking files data content in the post on PTN 3182. These images only illustrate some of the walking_826 file data content. Actual data are in the links above.