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Analysis Help
Analysis: Averaged instantaneous spike frequency vs step cycle


The instantaneous frequency of action potentials occurring on the waveform selected by the "Spike W.F. #" are averaged and displayed with respect to cycles on the waveform selected by the "Cycle W.F. #". That is, the cycles are divided evenly into a number of bins, and for each spike on the former waveform, the instantaneous frequency (the inverse of the interval from the previous spike) is calculated, and added into the appropriate bin for the position in the current cycle where this spike occurred. An average curve is then calculated and displayed with one point for each bin. No frequency is calculated for the first spike of the first cycle, if no previous spike was found, in the selected range to be analysed, to permit an interval calculation. If the spike trains for the former waveform have been properly set, statistics will be given for activity on this waveform, relative to the above cycles. Also, in this case, frequencies are calculated only for spikes in the same spike train, and no frequency is calculated for the first spike in each train.

If the "Take interval after spike" option is enabled, the interval to the following spike, rather than the previous one, is calculated. No frequency is calculated for the last spike of the last cycle, if no following spike is found in the selected range. If spike trains have been set, no frequency is calculated for the last spike in each train.

 

Key sequence  Parameter Initial Value
<Esc>AGAVFA  Analysis method  Averaged instantaneous spike frequency vs step cycle
<Esc>SF  Run file  ?
<Esc>SRS  Start of run  0 msec
<Esc>SRE  End of run  2.14748e_08 msec
<Esc>SRD  # of deleted sections  0
<Esc>SCW  Cycle W.F. #  ?
<Esc>Wn<CR>SCV  Cycle crossings  ?
<Esc>SCS  Base cycles on stop time  N
<Esc>SCT  Base cycles on spike trains  N
<Esc>SSWN  Spike W.F. #  ?
<Esc>Wn<CR>SS  W.F. spikes  ?
<Esc>SMIA  Take interval after spike  N
<Esc>SGN  Normalization  Y
<Esc>SCP  Percent of cycle active  0
<Esc>SGB  # bins- graph  100
<Esc>SGS  Start bin- graph  1
<Esc>SGC  Cycles on graph  2
<Esc>SGR  Regression degree  0
<Esc>SSWA  Base spike stats. on start  N
<Esc>SDD  Graph description  ""
<Esc>SDM  Main graph title  ""
<Esc>SDGG  Graph type  Adaptive
<Esc>SDGH  Histogram type  Adaptive
<Esc>SDGS  Std. deviation type  Adaptive
<Esc>SDGD  Diamond symbol size  5
<Esc>SDGT  Graph tag symbol  ""
<Esc>SDSA  Auto scale  Y
<Esc>SDSR  Round out scale bars  Y
<Esc>SDSXS  X scale bars  Y
<Esc>SDSYS  Y scale bars  Y
<Esc>SDSXL  Min X  0
<Esc>SDSXU  Max X  0
<Esc>SDSYL  Min Y  0
<Esc>SDSYU  Max Y  0
<Esc>SDSYHL  Min Y- hist  0
<Esc>SDSYHU  Max Y- hist  0
<Esc>SDTA  Show areas under curves  N
<Esc>SDTH  Histogram display  N
<Esc>SDTI  Interpolation  Y
<Esc>SDTX  Extend interpolation  Y
<Esc>SDTS  Display std dev  N
<Esc>SDTT  Top title display  Y
<Esc>SDUF  Freq. units  Hz
<Esc>SDUT  Time units  msec

 


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Copyright © 2017 G. R. Detillieux, Spinal Cord Research Centre, The University of Manitoba.