An in vitro demonstration of CMOS-based optoelectronic neural interface device for optogenetics

Author(s):  
T. Tokuda ◽  
S. Nakajima ◽  
Y. Maezawa ◽  
T. Noda ◽  
K. Sasagawa ◽  
...  
2021 ◽  
Author(s):  
Catalina Vallejo Giraldo ◽  
Ouidir Ouidja Mohand ◽  
Minh Bao Huynh ◽  
Alexandre Trotier ◽  
Katarzyna Krukiewicz ◽  
...  

Further in the search for biomimicry of the properties analogous to neural tissues, and with an ultimate goal of mitigating electrode deterioration via reactive host cell response and glial scar formation, the bio-functionalisation of PEDOT:PTS neural coating is here presented using a heparan mimetic termed (HM) F6. A sulphated mimetic polyanion, with a potential role in neuromodulation in neurodegenerative diseases, and used here for the first time as neural coating. This work acts as a first step towards the use of HM biological dopants, to enhance neuroelectrode functionality, to promote neural outgrowth and to maintain minimal glial scar formation in vitro at the neural-interface. Further, this study opens new possibilities for the evaluation of glycan mimetics in neuroelectrode functionalisation.


Optogenetics ◽  
2015 ◽  
pp. 375-389
Author(s):  
Takashi Tokuda ◽  
Toshihiko Noda ◽  
Kiyotaka Sasagawa ◽  
Jun Ohta

Author(s):  
Takashi Tokuda ◽  
Makito Haruta ◽  
Kiyotaka Sasagawa ◽  
Jun Ohta

2007 ◽  
Vol 2007 ◽  
pp. 1-13 ◽  
Author(s):  
A. Novellino ◽  
P. D'Angelo ◽  
L. Cozzi ◽  
M. Chiappalone ◽  
V. Sanguineti ◽  
...  

One of the key properties of intelligent behaviors is the capability to learn and adapt to changing environmental conditions. These features are the result of the continuous and intense interaction of the brain with the external world, mediated by the body. For this reason x201C;embodiment” represents an innovative and very suitable experimental paradigm when studying the neural processes underlying learning new behaviors and adapting to unpredicted situations. To this purpose, we developed a novel bidirectional neural interface. We interconnected in vitro neurons, extracted from rat embryos and plated on a microelectrode array (MEA), to external devices, thus allowing real-time closed-loop interaction. The novelty of this experimental approach entails the necessity to explore different computational schemes and experimental hypotheses. In this paper, we present an open, scalable architecture, which allows fast prototyping of different modules and where coding and decoding schemes and different experimental configurations can be tested. This hybrid system can be used for studying the computational properties and information coding in biological neuronal networks with far-reaching implications for the future development of advanced neuroprostheses.


MRS Bulletin ◽  
2012 ◽  
Vol 37 (6) ◽  
pp. 566-572 ◽  
Author(s):  
Yoonkey Nam

Abstract


2003 ◽  
Vol 773 ◽  
Author(s):  
David J. Edell

AbstractDevelopments in the field of BioMEMS share many of the same issues encountered in the development of neural interface technology that has been underway for many decades. In addition to issues of function, other issues such as biocompatibility and bioresistance have also presented great challenges. The focus of this paper is on the development and testing of electrically insulating biomaterials for micro-devices that can be implanted in biological systems. A variety of accelerated degradation and accelerated detection of degradation techniques have been developed and are used to screen candidate materials. Direct tests of mechanical properties, adhesion, and chemical resistance are used for further assessment. Promising materials indicate what chemistry might be suitable for development of a Chemical Vapor Deposited (CVD) thin film coating. CVD coatings are under development that may be useful for insulation of very small, micromachined elements of an implantable device while only increasing the size of the device by a few micrometers. Materials passing in-vitro testing are then considered for in-vivo testing. Novel instrumentation for testing devices in-vivo has been developed.


Author(s):  
Toshihiko Noda ◽  
Takuya Kitao ◽  
Takasuke Ito ◽  
Kiyotaka Sasagawa ◽  
Takashi Tokuda ◽  
...  

2014 ◽  
Vol 4 (2) ◽  
pp. 129-141 ◽  
Author(s):  
Raeyoung Kim ◽  
Sunghoon Joo ◽  
Hyunjun Jung ◽  
Nari Hong ◽  
Yoonkey Nam

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