title: 3D silicon neural probe with integrated optical fibers for optogenetic modulation.
abstract: Optogenetics is a powerful modality for neural modulation that can be useful for a wide array of biomedical studies. Penetrating microelectrode arrays provide a means of recording neural signals with high spatial resolution. It is highly desirable to integrate optics with neural probes to allow for functional study of neural tissue by optogenetics. In this paper, we report the development of a novel 3D neural probe coupled simply and robustly to optical fibers using a hollow parylene tube structure. The device shanks are hollow tubes with rigid silicon tips, allowing the insertion and encasement of optical fibers within the shanks. The position of the fiber tip can be precisely controlled relative to the electrodes on the shank by inherent design features. Preliminary in vivo rat studies indicate that these devices are capable of optogenetic modulation simultaneously with 3D neural signal recording.
authors.affiliation: The Biomedical Engineering Department of Wayne State University, Detroit, MI 48202, USA. yxu@eng.wayne.edu.
authors.forename: Eric G R
authors.initials: EG
authors.lastname: Kim
authors.forename: Hongen
authors.initials: H
authors.lastname: Tu
authors.forename: Hao
authors.initials: H
authors.lastname: Luo
authors.forename: Bin
authors.initials: B
authors.lastname: Liu
authors.forename: Shaowen
authors.initials: S
authors.lastname: Bao
authors.forename: Jinsheng
authors.initials: J
authors.lastname: Zhang
authors.forename: Yong
authors.initials: Y
authors.lastname: Xu
mesh_terms: D000818:Animals; D008297:Male; D008839:Microelectrodes; D055100:Optical Fibers; D062308:Optogenetics / Q000295:instrumentation*; D010316:Particle Size; D016062:Porosity; D051381:Rats; D017207:Rats, Sprague-Dawley; D012825:Silicon / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D012825:Silicon