A hybrid PDMS-Parylene subdural multi-electrode array
Abstract
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 ka"broken vertical bar and 600 ka"broken 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.
Keywords
PDMS; Parylene; Epilepsy; Brain Computer Interface (BCI); Subdural electrode; ECoG; Flexible electrode
DOI
10.1007/s10544-013-9743-2
Date of this Version
6-2013
Recommended Citation
Ochoa, Manuel; Wei, Pinghung; Wolley, Andrew; Otto, Kevin J.; and Ziaie, Babak, "A hybrid PDMS-Parylene subdural multi-electrode array" (2013). Birck and NCN Publications. Paper 1404.
http://dx.doi.org/10.1007/s10544-013-9743-2