Psychophysiological Interaction

Psycho-physiological interaction (PPI) is a functional brain imaging analysis method. It estimates context-specific changes in effective connectivity (coupling) between a region of interest (seed) and other brain regions.[1][2] Thus, PPI analysis identifies brain regions whose activity depends on an interaction between psychological context (the task) and physiological state (the time course of brain activity) of the seed region.[3]

See also

References

  1. ↑ Friston, K.J; Buechel, C; Fink, G.R; Morris, J; Rolls, E; Dolan, R.J (October 1997). "Psychophysiological and Modulatory Interactions in Neuroimaging". NeuroImage. 6 (3): 218–229. PMID 9344826. doi:10.1006/nimg.1997.0291.
  2. ↑ Friston, Karl J. (January 2011). "Functional and Effective Connectivity: A Review". Brain Connectivity. 1 (1): 13–36. PMID 22432952. doi:10.1089/brain.2011.0008.
  3. ↑ O’Reilly, Jill X.; Woolrich, Mark W.; Behrens, Timothy E.J.; Smith, Stephen M.; Johansen-Berg, Heidi (June 2012). "Tools of the trade: psychophysiological interactions and functional connectivity". Social Cognitive and Affective Neuroscience. 7 (5): 604–609. doi:10.1093/scan/nss055.
  1. PPI implemented using FEAT : PPI FSL Wiki - Nuffield Department of Clinical Neurosciences
  2. PPI implemented using SPM : SPM Central - UCL Institute of Neurology


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