find.clusters: find clusters
In erpR: Event-Related Potentials (ERP) Analysis, Graphics and Utility Functions

Description Usage Arguments Details Value Author(s) Examples

Internal function for mass.t.test, used in cluster based permutation to find clusters.

1	find.clusters(tscores, thresh, chan_hood, thresh_sign, min_nchans)

`tscores`	a electrode by timepoitns matrix of t-scores
`thresh`	The threshold to be used to filter the t-scores.
`chan_hood`	an electrode by electrode matrix. As the one created with `spatial_neighbours`
`thresh_sign`	a value (-1 or 1), to specify is positive clusters or negative clusters are searcher.
`min_nchans`	Minimum number of channels to consider a cluster as valid.

This is an R translation of find.clusters.m function in MASS univariate toolbox. The min_nchans has been added by me. The min_nchans is inclued as argument to take into account for volume conduction (i.e., it is unlikely that, especially with dense array, an effect is present only in one channel).

A vector with clusters.

Giorgio Arcara