FieldTrip

Note that this reference documentation is identical to the help that is displayed in Matlab when you type “help ft_connectivity_psi”.

  FT_CONNECTIVITY_PSI computes the phase slope index from a data-matrix
  containing a cross-spectral density, according to FIXME include reference
 
  Use as
    [c, v, n] = ft_connectivity_psi(input, varargin)
 
  The input data input should be organized as:
    Repetitions x Channel x Channel (x Frequency) (x Time)
  or
    Repetitions x Channelcombination (x Frequency) (x Time)
 
  The first dimension should be singleton if the input already contains
  an average
 
  Additional input arguments come as key-value pairs:
 
  hasjack  0 or 1 specifying whether the Repetitions represent
                    leave-one-out samples
  feedback 'none', 'text', 'textbar' type of feedback showing progress of
                    computation
  dimord          specifying how the input matrix should be interpreted
  powindx
  normalize
  nbin            the number of frequency bins across which to integrate
 
  The output c contains the correlation/coherence, v is a variance estimate
  which only can be computed if the data contains leave-one-out samples,
  and n is the number of repetitions in the input data.
  If the phase slope index is positive, then the first chan (1st dim) becomes
  more lagged (or less leading) with higher frequency, indicating that it
  is causally driven by the second channel (2nd dim)
 
  See also FT_CONNECTIVITYANALYSIS