Multichannel Systems NeuroExplorer - Manual (Page 101)

2.29. Place Cell Analysis
This analysis estimates the frequency of neuronal firing as a function of position of an animal. The
animal position should be described by two continuously recorded variables.
Parameters
Parameter Description
X Position Continuous variable that describes X position of the animal.
Y Position Continuous variable that describes Y position of the animal.
Fix Positions This option specifies whether NeuroExplorer needs to fix problems that
often occur in recording of position variables. For example, when LED is
obscured by the wires, both position variables suddenly jump to 0 and then
jump back to the previous position.
Fix Threshold Fix Positions parameter. See Algorithm section below for details.
Fix Bad X Fix Positions parameter. The 'bad' value of X variable. See Algorithm
section below for details.
Fix Bad Y Fix Positions parameter. The 'bad' value of Y variable. See Algorithm
section below for details.
X Min X axis minimum in X Position units.
X Max X axis maximum in X Position units.
Y Min Y axis minimum in Y Position units.
Y Max Y axis maximum in Y Position units.
Number of Bins (X) Number of bins along X axis.
Number of Bins (Y) Number of bins along Y axis.
Display This parameter determines what kind of Place Cell Analysis display is
shown (Path, Firing Positions, Time Spent (in each cell), Number of Visits
(to each cell), Spike Counts (for each cell), Firing Rates (for each cell),
Firing Fields).
Min. Time Spent Minimum time spent. This parameter is used only with Firing Rates display.
If the animal spent less time in the cell than Min Time Spent, the firing rate
for the cell is set to zero.
Min Visits Minimum number of visits. This parameter is used only with Firing Rates
display. If the animal visited the cell less than Min Visits number of times,
the firing rate for the cell is set to zero.
Firing Rate Bin Bin size (in seconds) to calculate firing rates.
Min Std. Dev. in Field Minimum standard deviation in the field. See Algorithm section below for
details.
Min. Pixels in Field Minimum number of pixels in the field. See Algorithm section below for
details.
Select Data If Select Data is From Time Range, only the data from the specified (by
Select Data From and Select Data To parameters) time range will be used
in analysis. See also
Data Selection Options .
Select Data From Start of the time range in seconds.
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