


Multi-taper event triggered time-frequency spectrum - continuous process
Usage:
[S,t,f,Serr]=mtspecgramtrigc(data,E,win,movingwin,params)
Input:
Note units have to be consistent. Thus, if movingwin is in seconds, Fs
has to be in Hz. see chronux.m for more information.
data (single channel data in a column vector) -- required
E (event times) -- required
win (in the form [winl winr] i.e window around each event)
required
movingwin (in the form [window winstep] i.e length of moving
window and step size) -
required
Note that units for the windows have
to be consistent with
units of Fs
params: structure with fields tapers, pad, Fs, fpass, err, trialave
- optional
tapers (precalculated tapers from dpss, or in the form [NW K] e.g [3 5]) -- optional. If not
specified, use [NW K]=[3 5]
pad (padding factor for the FFT) - optional. Defaults to 0.
e.g. For N = 500, if PAD = 0, we pad the FFT
to 512 points; if PAD = 2, we pad the FFT
to 2048 points, etc.
Fs (sampling frequency) - optional. Default 1.
fpass (frequency band to be used in the calculation in the form
[fmin fmax])- optional.
Default all frequencies between 0 and Fs/2
err (error calculation [1 p] - Theoretical error bars; [2 p] - Jackknife error bars
[0 p] or 0 - no error bars) - optional. Default 0.
trialave (average over events when 1, don't average when 0) - optional. Default 0
Output:
S (triggered spectrum in form time x frequency x events for trialave=0; or in the form time x frequency trialave=1)
t (times)
f (frequencies)
Serr (error bars) only for err(1)>=1

0001 function [S,t,f,Serr]=mtspecgramtrigc(data,E,win,movingwin,params) 0002 % Multi-taper event triggered time-frequency spectrum - continuous process 0003 % 0004 % Usage: 0005 % 0006 % [S,t,f,Serr]=mtspecgramtrigc(data,E,win,movingwin,params) 0007 % Input: 0008 % Note units have to be consistent. Thus, if movingwin is in seconds, Fs 0009 % has to be in Hz. see chronux.m for more information. 0010 % data (single channel data in a column vector) -- required 0011 % E (event times) -- required 0012 % win (in the form [winl winr] i.e window around each event) 0013 % required 0014 % movingwin (in the form [window winstep] i.e length of moving 0015 % window and step size) - 0016 % required 0017 % Note that units for the windows have 0018 % to be consistent with 0019 % units of Fs 0020 % params: structure with fields tapers, pad, Fs, fpass, err, trialave 0021 % - optional 0022 % tapers (precalculated tapers from dpss, or in the form [NW K] e.g [3 5]) -- optional. If not 0023 % specified, use [NW K]=[3 5] 0024 % pad (padding factor for the FFT) - optional. Defaults to 0. 0025 % e.g. For N = 500, if PAD = 0, we pad the FFT 0026 % to 512 points; if PAD = 2, we pad the FFT 0027 % to 2048 points, etc. 0028 % Fs (sampling frequency) - optional. Default 1. 0029 % fpass (frequency band to be used in the calculation in the form 0030 % [fmin fmax])- optional. 0031 % Default all frequencies between 0 and Fs/2 0032 % err (error calculation [1 p] - Theoretical error bars; [2 p] - Jackknife error bars 0033 % [0 p] or 0 - no error bars) - optional. Default 0. 0034 % trialave (average over events when 1, don't average when 0) - optional. Default 0 0035 % Output: 0036 % S (triggered spectrum in form time x frequency x events for trialave=0; or in the form time x frequency trialave=1) 0037 % t (times) 0038 % f (frequencies) 0039 % Serr (error bars) only for err(1)>=1 0040 0041 if nargin < 4; error('Need data, events and parameters for the windows'); end; 0042 if nargin < 5; params=[]; end; 0043 [tapers,pad,Fs,fpass,err,trialave,params]=getparams(params); 0044 if nargout > 3 && err(1)==0; 0045 % Cannot compute error bars with err(1)=0. change params and run again. 0046 error('When Serr is desired, err(1) has to be non-zero.'); 0047 end; 0048 data=createdatamatc(data,E,Fs,win); 0049 if nargout==4; 0050 [S,t,f,Serr]=mtspecgramc(data,movingwin,params); 0051 else 0052 [S,t,f]=mtspecgramc(data,movingwin,params); 0053 end;