I conducted SSEP analysis using Letswave and used waveform multiviewer to generate scalp topos at each frequency of interest. I am wondering, though, what the parameters are underlying the generated topos. For example, are these topos are indeed sampled exactly from the cursor point and thus originate from only one frequency bin? Or, does it take an average across a number of neighboring frequency bins? Clarification would be great!
Relatedly, I tried using the scalpmap SSEP series figure creator instead, which does seem to let you determine the tolerance (number of bins). However, I am only able to produce 2D topos, which don't use the traditional color map (they are a green color only, with faded or stronger green color showing power...I prefer the blue/red color maps). When I select 3D scalp maps, I get the following error and have not been able to resolve (I have already ensured channel locations are added):
"Index exceeds matrix dimensions.
Error in CLW_headplot (line 42)
vector=vector(find(tp==1));
Error in GLW_figure_scalpmap_SSEP_series>headplot_btn_Callback (line 620)
CLW_headplot(vector2,dataset.header,'maplimits',[cmin cmax]);
Error in gui_mainfcn (line 95)
feval(varargin{:});
Error in GLW_figure_scalpmap_SSEP_series (line 24)
gui_mainfcn(gui_State, varargin{:});
Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)GLW_figure_scalpmap_SSEP_series('headplot_btn_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating UIControl Callback."
Assistance with proceeding would be great! I am fine with the topos generated from the waveform multiviewer if that is easiest, and just need to know the parameters underlying the generated topos. Thank you very much for your help!
I conducted SSEP analysis using Letswave and used waveform multiviewer to generate scalp topos at each frequency of interest. I am wondering, though, what the parameters are underlying the generated topos. For example, are these topos are indeed sampled exactly from the cursor point and thus originate from only one frequency bin? Or, does it take an average across a number of neighboring frequency bins? Clarification would be great!
Relatedly, I tried using the scalpmap SSEP series figure creator instead, which does seem to let you determine the tolerance (number of bins). However, I am only able to produce 2D topos, which don't use the traditional color map (they are a green color only, with faded or stronger green color showing power...I prefer the blue/red color maps). When I select 3D scalp maps, I get the following error and have not been able to resolve (I have already ensured channel locations are added):
"Index exceeds matrix dimensions.
Error in CLW_headplot (line 42)
vector=vector(find(tp==1));
Error in GLW_figure_scalpmap_SSEP_series>headplot_btn_Callback (line 620)
CLW_headplot(vector2,dataset.header,'maplimits',[cmin cmax]);
Error in gui_mainfcn (line 95)
feval(varargin{:});
Error in GLW_figure_scalpmap_SSEP_series (line 24)
gui_mainfcn(gui_State, varargin{:});
Error in
matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)GLW_figure_scalpmap_SSEP_series('headplot_btn_Callback',hObject,eventdata,guidata(hObject))
Error while evaluating UIControl Callback."
Assistance with proceeding would be great! I am fine with the topos generated from the waveform multiviewer if that is easiest, and just need to know the parameters underlying the generated topos. Thank you very much for your help!