unlock/analysis/andres/Code/trimEpochs.m File Reference

Functions
else if unlockInfo epoch fromEnd If epochs extracted from decodedTrial	trigger (at end of trial) and%moving backwards(trigger is at end of trial but last samples might be from next epoch) trigPos
else If epochs extracted from first	sample (end of trial spills over next trial, first samples might be from previous epoch) trimStart
id	dcdTgt ()
last trigger from leftOver data if	length (trigPos) >
end trimDcdTgt	val (end)
	tmpDcdTgt (end,:)
Variables
	function [trimmedEpochs, trimDcdTgt, epochDcdTgt, unlockInfo]
	trimStart = round(unlockInfo.epoch.startGap*unlockInfo.main.Fs)
	trimEnd = trigPos - round(unlockInfo.epoch.endGap*unlockInfo.main.Fs)
	trimDcdTgt = dcdTgt
trimDcdTgt	val = circshift(dcdTgt.val,-ones(1,unlockInfo.epoch.nEpochs))
shifting to previous epoch the trigger values Last decoder trigger	trigPos = unique(dcdTgt.leftOvers.dcdTgt)
else	lastTrig = trigPos(1)
end end Trim epochs	trimmedEpochs = unlockEpochs(trimStart:trimEnd,:,:,:)
	tmpDcdTgt = epochDcdTgt(trimStart:trimEnd,:)
	epochDcdTgt = tmpDcdTgt
Changing values in info structure unlockInfo epoch	trialSampLen = trimEnd - trimStart + 1
unlockInfo epoch	changedTrialLen = true

---

Function Documentation

id dcdTgt

(

)

[virtual]

last trigger from leftOver data if length

(

trigPos

)

else If epochs extracted from first sample	(	end of trial spills over next	trial,
		first samples might be from previous	epoch
	)

tmpDcdTgt	(	end	,
		:
	)

else if unlockInfo epoch fromEnd If epochs extracted from decodedTrial trigger

(

at end of

trial

)

end trimDcdTgt val

(

end

)

---

Variable Documentation

unlockInfo epoch changedTrialLen = true

epochDcdTgt = tmpDcdTgt

function[trimmedEpochs, trimDcdTgt, epochDcdTgt, unlockInfo]

Initial value:

 trimEpochs(unlockEpochs,unlockInfo,epochDcdTgt,dcdTgt) 
% function [trimmedEpochs,trimDcdTgt,epochDcdTgt,unlockInfo] = trimEpochs(unlockEpochs,unlockInfo,epochDcdTgt,dcdTgt)
%
% Trims the epochs to include only data from that trial. Useful when not
% sure boundaries of epoch are from same trial or from previous or next
% one. 
%
% boundaries from both sides are removed based on location of the decoded
% trial end trigger and epoch extraction method (fromEnd or not) and location
% 
%
%
% Andres. v1.1      02 Jan 2014
% Last modified:    02 Jan 2014

%% Getting trimming boundaries
if unlockInfo.main.triggeredData
    trigPos = unique(dcdTgt.samp)

else lastTrig = trigPos(1)

tmpDcdTgt = epochDcdTgt(trimStart:trimEnd,:)

Changing values in info structure unlockInfo epoch trialSampLen = trimEnd - trimStart + 1

shifting to previous epoch the trigger values Last decoder trigger trigPos = unique(dcdTgt.leftOvers.dcdTgt)

trimDcdTgt = dcdTgt

trimEnd = trigPos - round(unlockInfo.epoch.endGap*unlockInfo.main.Fs)

end end Trim epochs trimmedEpochs = unlockEpochs(trimStart:trimEnd,:,:,:)

trimStart = round(unlockInfo.epoch.startGap*unlockInfo.main.Fs)

trimDcdTgt val = circshift(dcdTgt.val,-ones(1,unlockInfo.epoch.nEpochs))