# Differences

This shows you the differences between two versions of the page.

 — reference:ft_timelocksimulation [2018/08/23 14:43] (current) Line 1: Line 1: + =====  FT_TIMELOCKSIMULATION ===== + + Note that this reference documentation is identical to the help that is displayed in MATLAB when you type "help ft_timelocksimulation"​. + + <​html><​pre>​ + <​font color=green>​FT_TIMELOCKSIMULATION​ computes a simulated signal that resembles an + event-related potential or field + + Use as + timelock = ft_timelockstatistics(cfg) + which will return a datastructure that resembles the output of + <​font color=green>​FT_TIMELOCKANALYSIS​. + + cfg.fsample ​   = simulated sample frequency (default = 1000) + cfg.trllen ​    = length of simulated trials in seconds (default = 1) + cfg.numtrl ​    = number of simulated trials (default = 10) + cfg.baseline ​  = number (default = 0.3) + + The signal is constructed from three underlying functions. The shape is + controlled with + cfg.s1.numcycli = number (default = 1) + cfg.s1.ampl ​    = number (default = 1.0) + cfg.s2.numcycli = number (default = 2) + cfg.s2.ampl ​    = number (default = 0.7) + cfg.s3.numcycli = number (default = 4) + cfg.s3.ampl ​    = number (default = 0.2) + cfg.noise.ampl ​ = number (default = 0.1) + + Specifying numcycli=1 results in a monophasic signal, numcycli=2 is a biphasic, + etc. The three signals are scaled to the indicated amplitude, summed up and a + certain amount of noise is added. + + Following construction of the signal in each trial according to the + specification,​ the signals are averaged over trials. Both the average, the + variance and the individual trial signals are returned. + + See also <​font color=green>​FT_TIMELOCKANALYSIS,​ <​font color=green>​FT_TIMELOCKSTATISTICS,​ <​font color=green>​FT_FREQSIMULATION,​ + <​font color=green>​FT_DIPOLESIMULATION,​ <​font color=green>​FT_CONNECTIVITYSIMULATION​ +