Title
Time varying effective connectivity for describing brain network changes induced by a memory rehabilitation treatment.
Abstract
In clinical practice, cognitive impairment is often observed after stroke. The efficacy of rehabilitative interventions is routinely assessed by means of a neuropsychological test battery. Nowadays, more evidences indicate that the neuroplasticity which occurs after stroke can be better understood by investigating changes in brain networks. In this study we applied advanced methodologies for effective connectivity estimation in combination with graph theory approach, to define EEG derived descriptors of brain networks underlying memory tasks. In particular, we proposed such descriptors to identify substrates of efficacy of a Brain-Computer Interface (BCI) controlled neurofeedback intervention to improve cognitive function after stroke. Electroencephalographic (EEG) data were collected from two stroke patients before and after a neurofeedback-based training for memory deficits. We show that the estimated brain connectivity indices were sensitive to different training intervention outcomes, thus suggesting an effective support to the neuropsychological assessment in the evaluation of the changes induced by the BCI-based cognitive rehabilitative intervention.
Year
DOI
Venue
2014
10.1109/EMBC.2014.6945186
EMBC
Keywords
Field
DocType
bci,electroencephalographic data,neuropsychological assessment,neurophysiology,eeg data,electroencephalography,brain-computer interfaces,memory rehabilitation treatment,cognitive function,time varying effective connectivity,effective connectivity estimation,brain network changes,stroke patient,neurofeedback intervention,patient rehabilitation,memory deficit,cognitive rehabilitative intervention,eeg derived descriptor,graph theory,brain-computer interface,neurofeedback-based training,patient treatment,graph theory approach
Brain network,Rehabilitation,Computer science,Cognitive psychology
Conference
Volume
ISSN
Citations 
2014
1557-170X
0
PageRank 
References 
Authors
0.34
5
8
Name
Order
Citations
PageRank
Jlenia Toppi113622.74
D Mattia2377.96
A Anzolin322.20
M Risetti400.34
M Petti5135.99
F Cincotti6547.76
Fabio Babiloni731540.23
Laura Astolfi817020.52