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Analysis Help
Analysis: Averaged W.F. amplitude vs step cycle


The waveform selected by the "Amplitude W.F. #" is averaged and displayed with respect to cycles on the waveform selected by the "Cycle W.F. #". That is, the cycles are evenly divided into a number of bins, and for each cycle on the latter waveform, the corresponding segment of the former waveform is split up and the parts are added into their respective bins. An average curve is then calculated and displayed with one point for each bin.

If the cycle related parameters for the displayed waveform have been properly set, statistics will be given for activity on this waveform, relative to the above cycles. The parameters "Min W.F. amplitude" and "Max W.F. amplitude" can restrict the voltage levels allowed in the analysis to a smaller range.

The "Amplitude" reported at the top of this graph is simply the difference between the minimum and the maximum averages calculated, i.e. a peak-to-peak amplitude. On a DC-coupled intracellular recording of a motoneuron, this peak-to-peak amplitude is the locomotor drive potential or L.D.P.

 

Key sequence  Parameter Initial Value
<Esc>AGWVA  Analysis method  Averaged W.F. amplitude 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>SLWN  Amplitude W.F. #  0
<Esc>SLWRL  Min W.F. amplitude  -80000 mV
<Esc>SLWRU  Max W.F. amplitude  79997.6 mV
<Esc>Wn<CR>SCV  W.F. activity  ?
<Esc>SGN  Normalization  Y
<Esc>SCP  Percent of cycle active  0
<Esc>SGB  # bins- graph  100
<Esc>SLWP  W.F. ampl. as % of max  N
<Esc>SGS  Start bin- graph  1
<Esc>SGC  Cycles on graph  2
<Esc>SGR  Regression degree  0
<Esc>SLWA  Base cycle 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>SDUL  Sample units  mV
<Esc>SDUT  Time units  msec

 


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