PTN 3182

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. Latent period of cell’s response to stimulation of the pyramidal tract was 0.9 ms; collision test was satisfied. The cell was activated by adduction of the contralateral shoulder, that is, by the shoulder movement toward the body.The cell was recorded in track 21 of Cat 7 (see cortical map).

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 3182 is cell #43 by count on the second Excel sheet entitled “Selected for paper, n=145”. It can be followed on the other sheets of this Excel file by its unique number and the number of the recording file (walking_826). PTN was recorded on channel 2. During the flat surface and ladder-5 walking tasks, this PTN was recorded simultaneously with a group of neurons from the ventrolateral thalamus, VL 115 (group) recorded in thalamic track 3 (see thalamic map). VL 115 was included in the database on the activity of VL during locomotion on the flat surface and ladder-5 reported in Marlinski et al., 2012. It has its own post in this database, VL 115. VL neurons responded to touch and movement of the contralateral hip.  VL is recorded on channel 1.

This PTN was also recorded during walking on ladders with crosspieces 12 and 18 cm wide, and 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_826 (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 (both PTN and VL cells)
     (4) spike rastes, .rs format, zipped (see how to plot rasters)         
          
Thus, for this PTN’s 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 (the strides selection for rasters and histograms). Images below illustrate some of the walking-826 file data content. Actual data are in the links.

walking_827 (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_828 (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 these files does not present any particular difficulty.