Pulse-Modulated Vision Chips with Versatile-Interconnected Pixels. - Jun Ohta; Akihiro Uehara; Takashi Tokuda; Masahiro Nunoshita (IPDPS Workshops, 2000)

A retinal prosthetic device using a pulse-frequency-modulation CMOS image sensor. - Jun Ohta; Tetsuo Furumiya; David C. Ng; Akihiro Uehara; Keiichiro Kagawa; Takashi Tokuda; Masahiro Nunoshita (ASP-DAC, 2004)

Improvement of saturation characteristics of a frequency-demodulation CMOS image sensor. - Jun Ohta; Keiichiro Kagawa; Koichi Yamamoto; Takashi Tokuda; Yu Oya; Masahiro Nunoshita (ASP-DAC, 2004)

A high-sensitive digital photosensor using MOS interface-trap charge pumping. - Akihiro Uehara; Keiichiro Kagawa; Takashi Tokuda; Jun Ohta; Masahiro Nunoshita (IEICE Electron. Express, 2004)

Retinal prosthesis device based on pulse-frequency-modulation vision chip. - Jun Ohta; Keiichiro Kagawa; Takashi Tokuda; Masahiro Nunoshita (ISCAS (3), 2005)

A New Neural Imaging Approach Using a CMOS Imaging Device. - David C. Ng; Takashi Tokuda; Takuma Nakagawa; Hideki Tamura; Masahiro Nunoshita; Yasuyuki Ishikawa; Sadao Shiosaka; Jun Ohta (EMBC, 2006)

A multi-chip-architecture based flexible stimulation device for retinal prosthesis with a flip-chip packaging technique. - Takashi Tokuda; Masayuki Kawada; Sachie Sugitani; Mari Taniyama; Akihiro Uehara; Keiichiro Kagawa; Masahiro Nunoshita; Jun Ohta (EMBC, 2006)

Pulse frequency modulation based CMOS image sensor for subretinal stimulation. - David C. Ng; Tetsuo Furumiya; Koichi Yasuoka; Akihiro Uehara; Keiichiro Kagawa; Takashi Tokuda; Masahiro Nunoshita; Jun Ohta (IEEE Trans. Circuits Syst. II Express Briefs, 2006)

Integration of CMOS and MEMS Technologies in the Development of a Neural Imaging and Interface Device: Showcase of an Emerging Bioimaging Technique. - David C. Ng; Taro Mizuno; Takashi Tokuda; Masahiro Nunoshita; Hideki Tamura; Yasuyuki Ishikawa; Sadao Shiosaka; Jun Ohta (CICC, 2007)

CMOS LSI-based multi-chip flexible retinal prosthesis device for subretinal implantation. - Takashi Tokuda; Shigeki Sawamura; Yasuo Terasawa; Yasuo Tano; Jun Ohta (CICC, 2008)

Polarization analyzing CMOS sensor for microchamber/microfluidic system based on image sensor technology. - Takashi Tokuda; Sho Sato; Hirofumi Yamada; Jun Ohta (ISCAS, 2008)

CMOS-based flexible multi-site retinal stimulator toward retinal prosthesis technology. - Takashi Tokuda; Yoichi Takeuchi; Toshihiko Noda; Kiyotaka Sasagawa; Jun Ohta (CICC, 2009)

Polarization-analyzing CMOS Image Sensor using Monolithically Embedded Polarizer for Microchemistry Systems. - Takashi Tokuda; Hirofumi Yamada; Kiyotaka Sasagawa; Jun Ohta (ISCAS, 2009)

Implantable CMOS Biomedical Devices. - Jun Ohta; Takashi Tokuda; Kiyotaka Sasagawa; Toshihiko Noda (Sensors, 2009)

Polarization-Analyzing CMOS Image Sensor With Monolithically Embedded Polarizer for Microchemistry Systems. - Takashi Tokuda; Hirofumi Yamada; Kiyotaka Sasagawa; Jun Ohta (IEEE Trans. Biomed. Circuits Syst., 2009)

Development and in vivo Demonstration of CMOS-Based Multichip Retinal Stimulator With Simultaneous Multisite Stimulation Capability. - Takashi Tokuda; Yoichi Takeuchi; Yuki Sagawa; Toshihiko Noda; Kiyotaka Sasagawa; Kentaro Nishida; Takashi Fujikado; Jun Ohta (IEEE Trans. Biomed. Circuits Syst., 2010)

Wireless intra-brain communication for image transmission through mouse brain. - Kiyotaka Sasagawa; Takashi Matsuda; Peter Davis; Bing Zhang 002; Keren Li; Takuma Kobayashi; Toshihiko Noda; Takashi Tokuda; Jun Ohta (EMBC, 2011)

CMOS-based smart-electrode-type retinal stimulator with bullet-shaped bulk Pt electrodes. - Takashi Tokuda; Takasuke Ito; Takuya Kitao; Toshihiko Noda; Kiyotaka Sasagawa; Yasuo Terasawa; Hiroyuki Tashiro; Hironari Kanda; Takashi Fujikado; Jun Ohta (EMBC, 2011)

Fabrication of a flexible neural interface device with CMOS-based smart electrodes. - Toshihiko Noda; Takuya Kitao; Takasuke Ito; Kiyotaka Sasagawa; Takashi Tokuda; Yasuo Terasawa; Hiroyuki Tashiro; Hiroyuki Kanda; Takashi Fujikado; Jun Ohta (VLSI-SoC, 2011)

Micro CMOS image sensor for multi-area imaging. - Kiyotaka Sasagawa; Hiroyuki Masuda; Ayato Tagawa; Takuma Kobayashi; Toshihiko Noda; Takashi Tokuda; Jun Ohta (VLSI-SoC, 2011)

CMOS Imaging Devices for Biomedical Applications. - Jun Ohta; Takuma Kobayashi; Toshihiko Noda; Kiyotaka Sasagawa; Takashi Tokuda (IEICE Trans. Commun., 2011)

A micro imaging device for measuring neural actvities in the mouse deep brain with minimal invasiveness. - Jun Ohta; Chikara Kitsumoto; Toshihiko Noda; Kiyotaka Sasagawa; Takashi Tokuda; Mayumi Motoyama; Yasumi Ohta; Takuma Kobayashi; Yasuaki Ishikawa; Sadao Shiosaka (BioCAS, 2012)

Image signal transmission through brain by an implantable micro-imager. - Kiyotaka Sasagawa; Shogo Yokota; Chikara Kitsumoto; Takashi Matsuda; Peter Davis; Bing Zhang 002; Keren Li; Toshihiko Noda; Takashi Tokuda; Jun Ohta (BioCAS, 2012)

Baseband signal transmission experiment for intra-brain communication with implantable image sensor. - Kiyotaka Sasagawa; Shogo Yokota; Takashi Matsuda; Peter Davis; Bing Zhang 002; Keren Li; Takuma Kobayashi; Toshihiko Noda; Takashi Tokuda; Jun Ohta (EMBC, 2012)

A CMOS-based on-chip neural interface device equipped with integrated LED array for optogenetics. - Takashi Tokuda; Tomoaki Miyatani; Yasuyo Maezawa; Takuma Kobayashi; Toshihiko Noda; Kiyotaka Sasagawa; Jun Ohta (EMBC, 2012)

Implantable image sensor based on intra-brain image transmission. - Kiyotaka Sasagawa; Yoshiaki Ishii; Shogo Yokota; Takashi Matsuda; Peter Davis; Bing Zhang 002; Keren Li; Toshihiko Noda; Takashi Tokuda; Jun Ohta (EMBC, 2013)

An in vitro demonstration of CMOS-based optoelectronic neural interface device for optogenetics. - Takashi Tokuda; S. Nakajima; Y. Maezawa; Toshihiko Noda; Kiyotaka Sasagawa; Yasuyuki Ishikawa; Sadao Shiosaka; Jun Ohta (EMBC, 2013)

A CMOS microchip-based retinal prosthetic device for large numbers of stimulation in wide area. - Jun Ohta; Toshihiko Noda; Kiyotaka Sasagawa; Takashi Tokuda; Yasuo Terasawa; Hironari Kanda; Takashi Fujikado (ISCAS, 2013)

Demonstration of implantable CMOS image sensors for functional brain imaging. - Kiyotaka Sasagawa; Yoshinori Sunaga; Makito Haruta; Takahiro Yamaguchi; Hironari Takehara; Hiroaki Takehara; Toshihiko Noda; Takashi Tokuda; Jun Ohta (BioCAS, 2014)

An implantable image sensor with self-reset function for brain imaging. - Kiyotaka Sasagawa; Takahiro Yamaguchi; Makito Haruta; Yoshinori Sunaga; Hironari Takehara; Toshihiko Noda; Takashi Tokuda; Jun Ohta (BioCAS, 2014)

An implantable green fluorescence imaging device using absorption filters with high excitation light rejection ratio. - Yoshinori Sunaga; Makito Haruta; Takahiro Yamaguchi; Mayumi Motoyama; Yasumi Ohta; Hiroaki Takehara; Toshihiko Noda; Kiyotaka Sasagawa; Takashi Tokuda; Jun Ohta (BioCAS, 2014)

High coupling efficiency contact imaging system having micro light pipe array for a digital enzyme-linked immunosorbent assay. - Hironari Takehara; Mizuki Nagasaki; Kiyotaka Sasagawa; Hiroaki Takehara; Toshihiko Noda; Takashi Tokuda; Hiroyuki Noji; Jun Ohta (BioCAS, 2015)

CMOS-based on-chip neural interface devices for optogenetics. - Takashi Tokuda; Hiroaki Takehara; Toshihiko Noda; Kiyotaka Sasagawa; Jun Ohta (BioCAS, 2015)

Fabrication and functional demonstration of a smart electrode with a built-in CMOS microchip for neural stimulation of a retinal prosthesis. - Toshihiko Noda; Takumi Fujisawa; Ryohei Kawasaki; Hiroyuki Tashiro; Hiroaki Takehara; Kiyotaka Sasagawa; Takashi Tokuda; Jun Ohta (EMBC, 2015)

Hemodynamic imaging using an implantable self-reset image sensor. - Kiyotaka Sasagawa; Takahiro Yamaguchi; Makito Haruta; Yasumi Ohta; Hiroaki Takehara; Toshihiko Noda; Takashi Tokuda; Jun Ohta (BioCAS, 2016)

Compact lensless digital counting system for fluorescent micro-reaction-chamber array. - Hironari Takehara; Yuta Nakamoto; Kiyotaka Sasagawa; Hiroaki Takehara; Toshihiko Noda; Takashi Tokuda; Jun Ohta (BioCAS, 2016)

CMOS-based opto-electronic neural interface devices for optogenetics. - Takashi Tokuda; Satoki Noguchi; Satoru Iwasaki; Hiroaki Takehara; Toshihiko Noda; Kiyotaka Sasagawa; Jun Ohta (EMBC, 2016)

Intelligent motor modules system. - Takashi Tokuda; Shigeki Doi (GCCE, 2016)

On-chip fluorescence detection system with high-density microchamber array based on CMOS image sensor. - Jun Ohta; Hironari Takehara; Kiyotaka Sasagawa; Hiroaki Takehara; Toshihiko Noda; Takashi Tokuda (ISCAS, 2016)

Neural stimulators for retinal prosthesis embedded with CMOS microchips. - Toshihiko Noda; Hiroaki Takehara; Kiyotaka Sasagawa; Takashi Tokuda; Jun Ohta (MWSCAS, 2016)

In Vitro Long-Term Performance Evaluation and Improvement in the Response Time of CMOS-Based Implantable Glucose Sensors. - Takashi Tokuda; Toshikazu Kawamura; Keita Masuda; Tomohiro Hirai; Hironari Takehara; Yasumi Ohta; Mayumi Motoyama; Hiroaki Takehara; Toshihiko Noda; Kiyotaka Sasagawa; Jun Ohta; Teru Okitsu; et al. (IEEE Des. Test, 2016)

CMOS-Based Optoelectronic On-Chip Neural Interface Device. - Takashi Tokuda; Hiroaki Takehara; Toshihiko Noda; Kiyotaka Sasagawa; Jun Ohta (IEICE Trans. Electron., 2016)

Fabrication and in vivo demonstration of microchip-embedded smart electrode device for neural stimulation in retinal prosthesis. - Toshihiko Noda; Shinya Nishimura; Yukari Nakano; Yasuo Terasawa; Makito Haruta; Kiyotaka Sasagawa; Takashi Tokuda; Jun Ohta (BioCAS, 2017)

Fluorescence imaging device with an ultra-thin micro-LED. - Kiyotaka Sasagawa; Makito Haruta; Koki Fujimoto; Yasumi Ohta; Toshihiko Noda; Takashi Tokuda; Jun Ohta (BioCAS, 2017)

Parylene-based flexible imaging device for physiological measurement of rodent brain. - Takahiro Yamaguchi; Hajime Hayami; Yoshinori Sunaga; Makito Haruta; Toshihiko Noda; Kiyotaka Sasagawa; Takashi Tokuda; Jun Ohta (IEEE SENSORS, 2017)

CMOS-based opto-electric neural interface devices for optogenetics. - Takashi Tokuda; Makito Haruta; Toshihiko Noda; Kiyotaka Sasagawa; Jun Ohta (MWSCAS, 2017)

A high-precision CMOS biophotometry sensor with noise cancellation and two-step A/D conversion. - Mehdi Noormohammadi Khiarak; Kiyotaka Sasagawa; Takashi Tokuda; Jun Ohta; Sylvain Martel; Yves De Koninck; Benoit Gosselin (NEWCAS, 2017)

Stimulator Design of Retinal Prosthesis. - Jun Ohta; Toshihiko Noda; Kenzo Shodo; Yasuo Terasawa; Makito Haruta; Kiyotaka Sasagawa; Takashi Tokuda (IEICE Trans. Electron., 2017)

Implantable Microimaging Device for Observing Brain Activities of Rodents. - Jun Ohta; Yasumi Ohta; Hiroaki Takehara; Toshihiko Noda; Kiyotaka Sasagawa; Takashi Tokuda; Makito Haruta; Takuma Kobayashi; Yasemin M. Akay; Metin Akay (Proc. IEEE, 2017)

Battery-Free. Sticker-Like, Device for Health Monitoring, Operated by Optical Power Transfer. - Wuthibenjaphonchai Nattakarn; Makito Haruta; Toshihiko Noda; Kiyotaka Sasagawa; Takashi Tokuda; Mohamad Sawan; Sandro Carrara; Jun Ohta (BioCAS, 2018)

Excitation and Emission Filters for Implantable Fluorescence Imaging Devices by Laser Lift-Off Process. - Kiyotaka Sasagawa; Yasumi Ohta; Makito Haruta; Toshihiko Noda; Takashi Tokuda; Jun Ohta (BioCAS, 2018)

Live Demonstration: An Energy-Efficient CMOS Biophotometry Sensor Interface. - Mehdi Noormohammadi Khiarak; Kiyotaka Sasagawa; Takashi Tokuda; Jun Ohta; Sylvain Martel; Yves De Koninck; Benoit Gosselin (ISCAS, 2018)

An Energy-Efficient CMOS Biophotometry Sensor With Incremental DT-∑Δ ADC Conversion. - Mehdi Noormohammadi Khiarak; Kiyotaka Sasagawa; Takashi Tokuda; Jun Ohta; Sylvain Martel; Yves De Koninck; Benoit Gosselin (ISCAS, 2018)

Active Control of μLED Arrays for Optogenetic Stimulation. - Leila Montazeri; Nizar El Zarif; Takashi Tokuda; Jun Ohta; Mohamad Sawan (ISCAS, 2018)

Live Demonstration: IoT micronode with optical ID transmission capability operated by optical energy harvesting. - Takashi Tokuda; Wuthibenjaphonchai Nattakarn; Takaaki Ishizu; Makito Haruta; Toshihiko Noda; Kiyotaka Sasagawa; Jun Ohta; Mohamad Sawan (ISCAS, 2018)

A 17-bit 104-dB-DR High-Precision Low-Power CMOS Fluorescence Biosensor With Extended Counting ADC and Noise Cancellation. - Mehdi Noormohammadi Khiarak; Kiyotaka Sasagawa; Takashi Tokuda; Jun Ohta; Sylvain Martel; Yves De Koninck; Benoit Gosselin (NEWCAS, 2018)

Compact Lensless Fluorescence Counting System for Single Molecular Assay. - Hironari Takehara; Yuta Nakamoto; Narihito Ikeda; Kiyotaka Sasagawa; Makito Haruta; Toshihiko Noda; Takashi Tokuda; Jun Ohta (IEEE Trans. Biomed. Circuits Syst., 2018)

A Thin Composite Emission Filter and Fiber Coupled Laser Excitation for Implantable Fluorescence Imager Application. - Erus Rustami; Kiyotaka Sasagawa; Yasumi Ohta; Makito Haruta; Toshihiko Noda; Takashi Tokuda; Jun Ohta (ISCAS, 2019)

Guest Editorial: Special Issue on Selected Papers From IEEE BioCAS 2019. - Jun Ohta; Benoit Gosselin; Takashi Tokuda (IEEE Trans. Biomed. Circuits Syst., 2020)

Improved Charge Pump Design and Ex Vivo Experimental Validation of CMOS 256-Pixel Photovoltaic-Powered Subretinal Prosthetic Chip. - Po-Han Kuo; Oi-Ying Wong; Chi-Kuan Tzeng; Pu-Wei Wu; Chuan-Chin Chiao; Po-Hung Chen; Po-Chun Chen; Yueh-Chun Tsai; Fang-Liang Chu; Jun Ohta; Takashi Tokuda; Toshihiko Noda; et al. (IEEE Trans. Biomed. Eng., 2020)

Needle-Type Imager Sensor With Band-Pass Composite Emission Filter and Parallel Fiber-Coupled Laser Excitation. - Erus Rustami; Kiyotaka Sasagawa; Kenji Sugie; Yasumi Ohta; Makito Haruta; Toshihiko Noda; Takashi Tokuda; Jun Ohta (IEEE Trans. Circuits Syst. I Fundam. Theory Appl., 2020)

Micro-LED Array-Based Photo-Stimulation Devices for Optogenetics in Rat and Macaque Monkey Brains. - Yasumi Ohta; Mark Christian Guinto; Takashi Tokuda; Mamiko Kawahara; Makito Haruta; Hironari Takehara; Hiroyuki Tashiro; Kiyotaka Sasagawa; Hirotaka Onoe; Reona Yamaguchi; Yoshinori Koshimizu; Kaoru Isa; et al. (IEEE Access, 2021)

CMOS-based distributed implantable brain interface device. - Takashi Tokuda; Jiawen Li; Mizuki Takeuchi; Masato Fukamachi; Yasufumi Yokoshiki (NEWCAS, 2022)

A Highly Backdrivable Robotic Arm using Low Friction and High Accuracy Cycloidal Geared Motors: ALFHA. - Atsushi Kakogawa; Yoshiki Mori; Toshiki Fukasawa; Naoaki Kurimoto; Shinya Tokunaga; Takashi Tokuda; Akira Yamamoto; Sadao Kawamura (SII, 2022)

CMOS-based flexible-arrange distributed neural interface system for wide-area BMI. - Takashi Tokuda; Kosuke Takamatsu; Yicheng Wei; Yasufumi Yokoshiki (BioCAS, 2023)

Autonomous Floor Navigation Control of Mobile Robot Using Elevator Button Recognition with Deep Learning. - Jin Yien Lee; Takashi Tokuda; Kazuya Sato (SICE, 2023)

RISC-V compatible CPU for intermittently driven circuit. - Yasufumi Yokoshiki; Takashi Tokuda (IEICE Electron. Express, 2025)