Human neocortical electrical activity recorded on nonpenetrating microwire arrays: applicability for neuroprostheses.
Neurosurg Focus
; 27(1): E9, 2009 Jul.
Article
em En
| MEDLINE
| ID: mdl-19569897
ABSTRACT
OBJECT The goal of this study was to determine whether a nonpenetrating, high-density microwire array could provide sufficient information to serve as the interface for decoding motor cortical signals. METHODS:
Arrays of nonpenetrating microwires were implanted over the human motor cortex in 2 patients. The patients performed directed stereotypical reaching movements in 2 directions. The resulting data were used to determine whether the reach direction could be distinguished through a frequency power analysis.RESULTS:
Correlation analysis revealed decreasing signal correlation with distance. The gamma-band power during motor planning allowed binary classification of gross directionality in the reaching movements. The degree of power change was correlated to the underlying gyral pattern.CONCLUSIONS:
The nonpenetrating microwire platform showed good potential for allowing differentiated signals to be recorded with high spatial fidelity without cortical penetration.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Próteses e Implantes
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Interface Usuário-Computador
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Eletroencefalografia
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Microeletrodos
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Córtex Motor
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Movimento
Tipo de estudo:
Diagnostic_studies
Limite:
Humans
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Male
Idioma:
En
Ano de publicação:
2009
Tipo de documento:
Article