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Abstract--This work presents a new multi-site probe array applied with parylene technology, used for neural prostheses to
 

Summary: Abstract--This work presents a new multi-site probe array
applied with parylene technology, used for neural prostheses to
record high-level cognitive neural signals. Instead of inorganic
materials (e.g. silicon dioxide, silicon nitride), the electrodes and
conduction traces on probes are insulated by parylene, which is
a polymer material with high electrical resistivity, mechanical
flexibility, biocompatibility and easy deposition process. As a
result, the probes exhibit better electrical and mechanical
properties. The all dry process is demonstrated to fabricate
these probe arrays with monolithically integrated parylene
flexible cables using double-side-polished (DSP) wafers. With
the parylene flexible cables, the probes can be easily assembled
to a high density 3-D array for chronic implantation.
I. INTRODUCTION
IRECT brain interfaces called neural prostheses are
being designed that will enable a primate, via surgically
implanted electrode arrays and associated computer
algorithms, to control external electromechanical devices by
pure thought alone (Fig. 1) [1-4]. The first beneficiaries of
such technology are likely to be patients with spinal cord

  

Source: Andersen, Richard - Division of Biology, California Institute of Technology

 

Collections: Biology and Medicine