期刊
BIOMEDICAL MICRODEVICES
卷 15, 期 3, 页码 437-443出版社
SPRINGER
DOI: 10.1007/s10544-013-9743-2
关键词
PDMS; Parylene; Epilepsy; Brain Computer Interface (BCI); Subdural electrode; ECoG; Flexible electrode
资金
- NIH [NIBIB-R21-EB 005351-02]
In this paper, we report on a cost effective and simple method for fabricating a flexible multi-electrode array for subdural neural recording. The electrode was fabricated using a PDMS-Parylene bilayer to combine the major advantages of both materials. Mechanical and electrical characterizations were performed to confirm functionality of a 16-site electrode array under various flexed/bent conditions. The electrode array was helically wound around a 3 mm diameter cylindrical tube and laid over a 2 cm diameter sphere while maintaining its recording capability. Experimental results showed impedance values between 300 kabroken vertical bar and 600 kabroken vertical bar at 1 kHz for 90 mu m diameter gold recording sites. Acoustically evoked neural activity was successfully recorded from rat auditory cortex, confirming in vivo functionality.
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