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Specific effects of EEG based neurofeedback training on memory functions in post-stroke victims.

Kober SE, Schweiger D, Witte M, Reichert JL, Grieshofer P, Neuper C, Wood G - J Neuroeng Rehabil (2015)

Bottom Line: NF training showed no effects on other cognitive functions than memory.Post-stroke victims with memory deficits could benefit from NF training as much as healthy controls.The used NF training protocols (SMR, Upper Alpha) had specific as well as unspecific effects on memory.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, University of Graz, Universitaetsplatz 2/III, Graz, 8010, Austria. silvia.kober@uni-graz.at.

ABSTRACT

Background: Using EEG based neurofeedback (NF), the activity of the brain is modulated directly and, therefore, the cortical substrates of cognitive functions themselves. In the present study, we investigated the ability of stroke patients to control their own brain activity via NF and evaluated specific effects of different NF protocols on cognition, in particular recovery of memory.

Methods: N = 17 stroke patients received up to ten sessions of either SMR (N = 11, 12-15 Hz) or Upper Alpha (N = 6, e.g. 10-12 Hz) NF training. N = 7 stroke patients received treatment as usual as control condition. Furthermore, N = 40 healthy controls performed NF training as well. To evaluate the NF training outcome, a test battery assessing different cognitive functions was performed before and after NF training.

Results: About 70 % of both patients and controls achieved distinct gains in NF performance leading to improvements in verbal short- and long-term memory, independent of the used NF protocol. The SMR patient group showed specific improvements in visuo-spatial short-term memory performance, whereas the Upper Alpha patient group specifically improved their working memory performance. NF training effects were even stronger than effects of traditional cognitive training methods in stroke patients. NF training showed no effects on other cognitive functions than memory.

Conclusions: Post-stroke victims with memory deficits could benefit from NF training as much as healthy controls. The used NF training protocols (SMR, Upper Alpha) had specific as well as unspecific effects on memory. Hence, NF might offer an effective cognitive rehabilitation tool improving memory deficits of stroke survivors.

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Related in: MedlinePlus

Design of the whole study, demonstrating the procedure for each group
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Related In: Results  -  Collection

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Fig1: Design of the whole study, demonstrating the procedure for each group

Mentions: Fig. 1 illustrates the design of the whole study in more detail.Fig. 1


Specific effects of EEG based neurofeedback training on memory functions in post-stroke victims.

Kober SE, Schweiger D, Witte M, Reichert JL, Grieshofer P, Neuper C, Wood G - J Neuroeng Rehabil (2015)

Design of the whole study, demonstrating the procedure for each group
© Copyright Policy - OpenAccess
Related In: Results  -  Collection

License 1 - License 2
Show All Figures
getmorefigures.php?uid=PMC4666277&req=5

Fig1: Design of the whole study, demonstrating the procedure for each group
Mentions: Fig. 1 illustrates the design of the whole study in more detail.Fig. 1

Bottom Line: NF training showed no effects on other cognitive functions than memory.Post-stroke victims with memory deficits could benefit from NF training as much as healthy controls.The used NF training protocols (SMR, Upper Alpha) had specific as well as unspecific effects on memory.

View Article: PubMed Central - PubMed

Affiliation: Department of Psychology, University of Graz, Universitaetsplatz 2/III, Graz, 8010, Austria. silvia.kober@uni-graz.at.

ABSTRACT

Background: Using EEG based neurofeedback (NF), the activity of the brain is modulated directly and, therefore, the cortical substrates of cognitive functions themselves. In the present study, we investigated the ability of stroke patients to control their own brain activity via NF and evaluated specific effects of different NF protocols on cognition, in particular recovery of memory.

Methods: N = 17 stroke patients received up to ten sessions of either SMR (N = 11, 12-15 Hz) or Upper Alpha (N = 6, e.g. 10-12 Hz) NF training. N = 7 stroke patients received treatment as usual as control condition. Furthermore, N = 40 healthy controls performed NF training as well. To evaluate the NF training outcome, a test battery assessing different cognitive functions was performed before and after NF training.

Results: About 70 % of both patients and controls achieved distinct gains in NF performance leading to improvements in verbal short- and long-term memory, independent of the used NF protocol. The SMR patient group showed specific improvements in visuo-spatial short-term memory performance, whereas the Upper Alpha patient group specifically improved their working memory performance. NF training effects were even stronger than effects of traditional cognitive training methods in stroke patients. NF training showed no effects on other cognitive functions than memory.

Conclusions: Post-stroke victims with memory deficits could benefit from NF training as much as healthy controls. The used NF training protocols (SMR, Upper Alpha) had specific as well as unspecific effects on memory. Hence, NF might offer an effective cognitive rehabilitation tool improving memory deficits of stroke survivors.

Show MeSH
Related in: MedlinePlus