Osaka University

National Institute of Information and Communications Technology, Incorporated

Nihon Kohden Corporation

Panasonic Intellectual Property Management Co., Ltd.

The University of Tokyo

Advanced Telecommunications Research Institute International

Spchange, Llc.

Masayuki Hirata

Toshiki Yoshimine

Takafumi Suzuki

Seiji Kameda

Takufumi Yanagisawa

Katsuyoshi Suzuki

Hiroshi Ando

Kaoru Imajo

Tetsu Goto

Takahiro Nakamura

Youichi Saitoh

Hideo Eda

Hiroshi Yokoi

Takatsugu Kamata

Shinichi Yoshimura

Ryu Kato

Yukiyasu Kamitani

Ryohei Fukuma

Kojiro Matsushita

Yasushi Terazono

Toshio Yanagida

Amami Kato

Masaaki Taniguchi

Takahito Baba

Testu Goto

Yoshihiro Watanabe

Toshiaki Saito

Kenjiro Arashi

A resistance device () includes a field-effect transistor (TN) and a voltage applying circuit (). The voltage applying circuit () applies a control voltage (Vgs) between the gate and source of the field-effect transistor (TN) according to a temperature (T) to control a resistance value (R) between the drain and source of the field-effect transistor (TN). The control voltage (Vgs) is a voltage obtained by adding a correction voltage (Vc) to a reference voltage (Vgs). The correction voltage (Vc) depends on the temperature (T) and is set to be zero at a first temperature (T).

Resistance device, integrated circuit device, implantable device, and correction factor determining method

An internal device () is implanted in a living body (). A control section () causes a communication section () to wirelessly transmit data corresponding to electroencephalogram signals of the living body () which are detected through a group of N (N is 2 or more) electrodes, to an external device (). When the communication section () receives a designation signal designating a group of M electrode(s) (), M being smaller than N, the communication section () is caused to transmit data corresponding to electroencephalogram signals of the living body () which are detected through the group of M electrode(s) (), to the external device () in real time.

Brain-machine interface system capable of changing amount of communication data from internal device, and control method therefor

To allow an implantable device including an electronic circuit to be implanted in the head in a more preferable manner in terms of appearance and safely. This implantable device is used for a brain-machine interface or the like. A casing of an implantable device configured to be implanted in a human head has an outer convexity surface matching an external shape of a resected skull related to at least a craniotomy site of the artificial bone designed in accordance with a skull shape of each person in order to fill the craniotomy site. That is, the outer convexity surface of the artificial bone is provided with two functions: the original function of filling the craniotomy site as the artificial bone and a function of serving as the casing of the implantable device.

Casing of implantable device and implantable device, method for manufacturing casing of implantable device, and method for supporting treatment using implantable device

An internal device of a brain-machine interface system includes: an electrode group including N electrodes, N being 2 or more; an amplification element group including N amplification elements; a communicator communicating with an external device; and a controller selectively executing one of: a normal operation mode in which electroencephalogram signals acquired through the N electrodes are supplied to the amplification element group in a manner that each of the N electrodes corresponds to a respective one of the N amplification elements, and N amplified electroencephalogram signals are transmitted; and a noise-reduction operation mode in which an electroencephalogram signal acquired through an M electrode of the electrode group is supplied to the amplification element group in a manner that each M electrode corresponds to respective plural ones of the amplification elements, and an M amplified electroencephalogram signal is transmitted, M being smaller than N.

Internal device of brain-machine interface system including noise reduction technique, and method of controlling the internal device

A tube pump and a fluid delivery method, the tube pump including a plurality of pressing portions and a tube that delivers fluid. The pressing portions is spaced apart from each other in a rotational direction and provided for a rotation body turned by a drive unit and the tube is provided on an outer circumferential side of the rotation body. The tube pump includes a control unit that turns the rotation body opposite to a delivery direction until the rotation body reaches a predetermined angle so as to restore an area of the tube, pressed by the pressing portion on a most upstream side in the delivery direction, by an increase in pressure within the tube accompanied with a movement opposite to the delivery direction of the pressing portion adjacent to a downstream side in the delivery direction.

Tube pump and fluid delivery method

A machine control device includes: first decoders for estimating, from brain signal information, which one of body movements a user performs or images, based on learning using pairs of movements performed by the user and brain signal information, the body movements going toward one of first to nth body postures; second decoders for estimating from the brain signal information, an correct rate on the body movement estimation, based on learning using pairs of correct rates of the estimation of body movements and the brain signal information; and electric prosthetic arm control section for controlling an electric prosthetic arm to change stepwise its posture between first to nth postures via at least one intermediate posture therebetween, the first to nth postures corresponding to the first to nth body postures. The first decoders perform the estimation only when the estimated correct rate exceeds a threshold. When the first decoders estimate that the body movements goes toward a body posture different from the current one, the electric prosthetic arm control section changes the posture of the machine by performing a part of substeps of change from one of the first to nth body postures toward the posture associated with the body posture toward which the estimated body movement goes. This configuration allows a user to control a brain-signal-based machine to perform a natural movement without a long-term training and much brain information.

Machine control device, machine system, machine control method, and recording medium storing machine control program

An interface device in accordance with the present claimed invention is an interface devicethat intervenes between a measuring meansthat measures brain activities of a subject H and an objectto be controlled, and that comprises a reference signal storing part Dthat stores a brain activity signal measured at a time when the subject H conducts predetermined thinking different from direct thinking in order to control the objectto be controlled in a desired mode as a reference signal, a discriminating partthat compares the brain activity signal measured by the measuring meanswith the reference signal and discriminates whether or not the thinking of the subject H is the predetermined thinking, and a controlling partthat controls the objectto be controlled in the desired mode when the discriminating partdiscriminates that the thinking of the subject H is the predetermined thinking.

Interface device, interface method and control training device by the use of the interface device

With use of three-dimensional data of a brain shape, a mold for forming a sheet-shaped structure having a three-dimensional shape of the gyrus or sulcus surface, or the interhemispheric fissure or interlobar fissure surface is formed. With use of the mold, a sheet-shaped silicone structurehaving a three-dimensional shape of the gyrus or sulcus surface, or the interhemispheric fissure or interlobar fissure surface is formed. An electrodeis arranged on at least one side of the silicone structure. With this configuration, an intracranial electrodein which the electrodeis arranged on the sheet-shaped silicone structurehaving the three-dimensional shape of the gyrus or sulcus surface, or the interhemispheric fissure or interlobar fissure surface can be produced.

Intracranial electrode and method for producing same

Growing community of inventors

Suita, Japan

Masayuki Hirata