Development and Characterization of Novel Conductive Sensing Fibers for In Vivo Nerve Stimulation

Area of Science:

• Biomaterials Science
• Neurotechnology
• Materials Engineering

Background:

• Current neural electrodes are metallic, necessitating invasive procedures and risking nerve damage due to rigidity and degradation.
• Advancements in neural interfaces are crucial for understanding and treating neurological diseases.

Purpose of the Study:

• To demonstrate the utility of electrically conductive organic fibers (ECFs) as a novel material for direct nerve stimulation.
• To evaluate the conductive and cytotoxic properties of ECFs for neural applications.

Main Methods:

• ECFs were fabricated using a polyester base coated with carbon nanotube ink.
• Electrical conductivity of ECFs was characterized.
• In vitro cytotoxicity assays were performed.
• In vivo experiments in a rodent model demonstrated direct nerve stimulation using ECFs.

Main Results:

• ECFs exhibited suitable conductive properties for neural stimulation.
• The ECFs demonstrated low cytotoxicity in vitro, indicating biocompatibility.
• Successful direct nerve stimulation was achieved in vivo using the ECFs.

Conclusions:

• Electrically conductive organic fibers present a promising, less invasive alternative to traditional metallic electrodes for neural interfaces.
• ECFs offer potential for improved therapeutic strategies in neurotechnology and the treatment of neurological disorders.