Patents by Inventor Toshimitsu Musha
Toshimitsu Musha has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 10512434Abstract: It is intended to quantitatively evaluate deterioration in brain function associated with a disease such as dementia, with a high degree of accuracy by a simplified method using signals acquired from a few sensors arranged on the scalp.Type: GrantFiled: July 22, 2015Date of Patent: December 24, 2019Assignee: NIPRO CORPORATIONInventors: Yuri Watanabe, Yohei Kobayashi, Toshimitsu Musha, Yukio Kosugi, Takashi Asada
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Publication number: 20170245804Abstract: [Problem] It is intended to quantitatively evaluate deterioration in brain function associated with a disease such as dementia, with a high degree of accuracy by a simplified method using signals acquired from a few sensors arranged on the scalp.Type: ApplicationFiled: July 22, 2015Publication date: August 31, 2017Applicant: Brain Functions Laboratory, Inc.Inventors: Yuri WATANABE, Yohei KOBAYASHI, Toshimitsu MUSHA, Yukio KOSUGI, Takashi ASADA
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Publication number: 20150073249Abstract: Discrete Fourier transform is performed on an output of each brain potential sensor, which measure a subject's brain potential, for each segment in order to obtain a discrete Fourier coefficient that has a frequency component. A mean value of squares of absolute values of Fourier coefficients is obtained. The Fourier coefficients are normalized using the mean value for obtaining a normalized power spectrum NPS;j,m. Mean values of squares of absolute values of Fourier coefficients of adjoining frequency components in all the segments is normalized using a square value of the mean values of the adjoining frequency components for obtaining a normalized power ratio NPV;j,m. Two markers sNAT;j,m and vNAT;j,m are derived from the power spectrum and power ratio for evaluating a brain function activity level.Type: ApplicationFiled: November 18, 2014Publication date: March 12, 2015Applicant: BRAIN FUNCTIONS LABORATORY, INC.Inventor: Toshimitsu Musha
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Publication number: 20140107519Abstract: A magnitude of a current component in x direction, y direction or z direction, or a composite current of the current components in x direction, y direction and z direction, estimated from scalp potentials outputted from sensors mounted on a head of a subject, predetermined coordinates of lattice points preset in a standard brain, and predetermined coordinates of the sensors is determined. A normalized power variance (NPV) and its mean value are determined with Fourier coefficients determined from the magnitude of the current component or the composite current. Z-score (or Y-score) of the subject from a mean value of NPV predetermined in the same manner as the mean value and a standard deviation of the NPV for a predetermined normal person group is determined and mapped with contour lines corresponding to the lattice points on a horizontal plane designated.Type: ApplicationFiled: October 12, 2012Publication date: April 17, 2014Applicant: BRAIN FUNCTIONS LABORATORY, INC.Inventors: Toshimitsu MUSHA, Haruyasu MATSUZAKI, Yukio KOSUGI, Yoshio OKAMOTO, Takashi ASADA
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Patent number: 7734337Abstract: For measuring a brain local activity, a predetermined frequency bandwidth wider than a frequency bandwidth of alpha waves of scalp potentials is divided into a predetermined number of frequency banks each having a fixed frequency width, data of each divided frequency bank is divided into segments of a predetermined duration on a time axis, a Z-score of the subject is determined from a first mean value of normalized power variances determined for the segments and a second mean value of normalized power variances predetermined in the same manner as the first mean value for a predetermined normal person group and a standard deviation of the normalized power variances in the group, and a mean value of the Z-scores determined over all of the frequency banks is mapped on a brain surface for each sensor, whereby a template of a specified brain disorder and likelihood of a subject to a specified brain disorder are calculated.Type: GrantFiled: March 5, 2008Date of Patent: June 8, 2010Assignee: Brain Functions Laboratory, Inc.Inventors: Toshimitsu Musha, Haruyasu Matsuzaki
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Publication number: 20090171181Abstract: It is possible for the tips of all the electrodes to make contact with the scalp with greater reliability even with respect to different subjects, by adaptation to individual differences in the heads of subjects, and the functional status of the brain can be detected with greater accuracy. A brain function detection apparatus is provided which has a hat-shaped apparatus main body for mounting on the head of a subject, a plurality of electrodes for detecting brain wave signals, which are mounted in the apparatus main body separated from each other at intervals, and which are arranged in contact with the scalp, and the apparatus main body has a plurality of holder pieces in which at least one electrode is mounted, a bendable belt for linking the holder pieces, and a holder piece interval-adjusting apparatus for adjusting the distance between the holder pieces.Type: ApplicationFiled: July 15, 2005Publication date: July 2, 2009Inventors: Yoshiyuki Kumada, Toshimitsu Musha
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Publication number: 20090105603Abstract: For measuring a brain local activity, a predetermined frequency bandwidth wider than a frequency bandwidth of alpha waves of scalp potentials is divided into a predetermined number of frequency banks each having a fixed frequency width, data of each divided frequency bank is divided into segments of a predetermined duration on a time axis, a Z-score of the subject is determined from a first mean value of normalized power variances determined for the segments and a second mean value of normalized power variances predetermined in the same manner as the first mean value for a predetermined normal person group and a standard deviation of the normalized power variances in the group, and a mean value of the Z-scores determined over all of the frequency banks is mapped on a brain surface for each sensor, whereby a template of a specified brain disorder and likelihood of a subject to a specified brain disorder are calculated.Type: ApplicationFiled: March 5, 2008Publication date: April 23, 2009Applicant: Brain Functions Laboratory, Inc.Inventors: Toshimitsu Musha, Haruyasu Matsuzaki
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Publication number: 20080027345Abstract: The labor involved in cleaning for each examination is reduced, the examination can be carried out hygienically, and the convenience of use is improved. An electrode apparatus for detecting brain waves which is arranged in contact with the scalp and which detects brain wave signals is provided. The electrode apparatus for detecting brain waves comprises a rod-shaped electrode apparatus main body having an electrode disposed at the tip thereof, a cap which is mountable on the tip of the electrode apparatus main body and which has an elastic member which contains an electrolyte and which is disposed making close contact so as to cover the electrode, and a connection means which detachably connects the cap to the electrode apparatus main body.Type: ApplicationFiled: June 21, 2005Publication date: January 31, 2008Applicants: OLYMPUS CORPORATION, BRAIN FUNCTIONS LABORATORY, INC.Inventors: Yoshiyuki Kumada, Toshimitsu Musha
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Publication number: 20040171960Abstract: In a method and an apparatus for measuring degree of neuronal impairment in brain cortex, scalp potentials or magnetic fields of a subject are measured by mounting a plurality of sensors on a head of the subject, the measured scalp potentials or magnetic fields are converted into numerical data to obtain a dipolarity at each sampling, mean values of squared errors, within a fixed time interval, between a scalp potential or a magnetic field by an equivalent dipole at a dipolarity peak emergence time and the measured scalp potentials or magnetic fields, or variances of the squared errors from the mean values are obtained for the sensors, and a contour concerning a distribution of the mean values or the variances on a scalp or a brain surface corresponding thereto is mapped as an output. Alternatively, the squares of potentials sensed by the sensors are averaged for several seconds, and variances of these mean values are obtained for numerous reference persons.Type: ApplicationFiled: December 18, 2003Publication date: September 2, 2004Applicant: Brain Functions Laboratory, Inc.Inventors: Toshimitsu Musha, Noriyuki Take, Yusuke Mochizuki
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Patent number: 6741888Abstract: A proper frequency component of EEG is selected so that its scalp potential becomes smooth in a normal subject. When the brain function is impaired, non-uniformity of neuronal activity is detected in spatial as well as temporal fluctuations in the observed scalp potential of properly filtered EEG (usually the alpha component). The statistical parameters derived from dipolarity values of such a properly selected EEG component determine the state of the brain, in which whether the subject is normal or demented is judged in the early stage of dementia by comparing the obtained parameters with their threshold values. This invention presents a reliable, inexpensive, easy-to-handle and non-invasive method for sensitive screening of dementia and monitoring progress of dementia which also allows optimizing medication and treatment for dementia.Type: GrantFiled: November 27, 2001Date of Patent: May 25, 2004Assignee: Brain Functions Laboratory, Inc.Inventors: Toshimitsu Musha, Takashi Asada
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Publication number: 20020152738Abstract: A composite yarn and a method of manufacturing it are disclosed which makes it possible to produce a fine spun twisted union yarn (33) with natural grandrelle-like patterns. In particular, a manufacturing method of a fine spun twisted union yarn (33) is disclosed where the feed rate or feeding time of one of two fiber bundles (321, 322) is varied according to a 1/f fluctuation, and the one fiber bundle is spun and twisted with the other fiber bundle, thereby the one fiber bundle appears and disappears alternately on the periphery of the spun twisted union yarn (33.).Type: ApplicationFiled: February 11, 2000Publication date: October 24, 2002Inventors: Toshimitsu Musha, Yuki Niwa, Masaaki Isobe, Shigeo Horikoshi
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Publication number: 20020107455Abstract: The neuronal activity in the brain of demented subject becomes non-uniform over the cortical surface and this non-uniformity is sensitively detected by properly analyzing observed scalp potentials. The present invention is related to the computer algorithm and apparatus for numerically detecting the degree of such neuronal degeneration. A proper frequency component of EEG is selected so that its scalp potential becomes smooth in a normal subject. When the brain function is impaired, non-uniformity of neuronal activity is detected in spatial as well as temporal fluctuations in the observed scalp potential of properly filtered EEG (usually the alpha component). The statistical parameters derived from dipolarity values of such a properly selected EEG component determine the state of the brain, in which whether the subject is normal or demented is Judged in the early stage of dementia by comparing the obtained parameters with their threshold values.Type: ApplicationFiled: November 27, 2001Publication date: August 8, 2002Applicant: Brain Functions Laboratory, IncInventors: Toshimitsu Musha, Takashi Asada
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Patent number: 6349231Abstract: An apparatus and a method for automatically determining the present will of a human subject. The characteristic values of the subject are detected and output signals corresponding to the detected characteristic values are produced, amplified and digitized. A set of state variables for each selected frequency sub-band of a selected frequency band for each of the output signals is determined. Sets of reference weights and sets of reference biases for a neural network from sets of state reference variables corresponding to known wills are formed. Each of the sets of state variables, the sets of reference weights and the sets of reference biases are applied to the neural network to determine present will of the subject. The present will of the subject can be displayed or used to control an external device, such as a robot.Type: GrantFiled: July 31, 1997Date of Patent: February 19, 2002Assignee: Brain Functions Laboratory, Inc.Inventor: Toshimitsu Musha
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Patent number: 6067464Abstract: An electrode and a method for measuring bio-electric waves are provided in which the electrode comprises a support member, a piece of absorbent fiber projecting from the support member and a non-corrosive lead coupled to the piece of absorbent fiber. Improved electrical contact between the electrode and the subject's skin is provided by allowing the piece of absorbent fiber to absorb an electrically conductive fluid.Type: GrantFiled: October 3, 1997Date of Patent: May 23, 2000Assignee: Brain Functions Laboratory, Inc.Inventor: Toshimitsu Musha
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Patent number: 5813210Abstract: A twisting frame 1, and a method of twisting yarn 11 in which a twist is applied to the yarn by signals having a 1/f fluctuation to yield a yarn 11 in which the yarn count varies with a 1/f fluctuation. The first aspect is a twisting method that applies twist to a single yarn or a plural number of yarns, in which a twist is applied to the yarn or yarns by setting the twist count to correspond to the strengths of serial signals having a 1/f fluctuation.Type: GrantFiled: May 9, 1997Date of Patent: September 29, 1998Assignees: Toshimitsu Musha, Nisshinbo Industries Inc.Inventors: Toshimitsu Musha, Yuichi Yanai, Kazuyoshi Muraoka, Yuki Niwa, Yasuo Nakano
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Patent number: 5797853Abstract: An apparatus and method for automatically determining an individual's level of brain function is provided. EEG or MEG signals are collected amplified and digitized. The signals are then passed to a computer comprising a CPU, ROM and RAM, an input interface for collecting and filtering the scalp potential signals and an output interface for displaying the resulting information on a display device such as a printer or CRT. The computer determines the position of these signals in reference to the interpolated 3-D geometry of the subject's head. The dipolarity of a particular point is iteratively and empirically derived by comparing the values of these measured signals to a test signal and the error between the two is minimized. The procedure is repeated for the complete series of electrodes placed on the skull. The mean dipolarity of a subject is then determined for a given time frame.Type: GrantFiled: May 7, 1997Date of Patent: August 25, 1998Inventors: Toshimitsu Musha, Omi Terasaki
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Patent number: 5758697Abstract: A weaving method that imparts a 1/f fluctuation to the weave pattern. Adjacent and different numbered groups of different yarns, for example black yarn and white yarns, are alternately arranged in contiguous reed dents. The sequential number which is associated with each group manifests a series of numbers which effect the 1/f fluctuation. Following separation of the warp yarns into two sets by raising and lowering of healds to form a shed and passage of weft yarns therethrough, a woven fabric with a stripped 1/f fluctuation in the warp direction is created.Type: GrantFiled: May 8, 1996Date of Patent: June 2, 1998Assignees: Nisshinbo Industries, Inc., Toshimitsu MushaInventors: Toshimitsu Musha, Yuichi Yanai, Shoji Takagi, Shu Ono
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Patent number: 5752295Abstract: In the blending and spinning processes, 1/f fluctuation signals are imparted to the feed slivers or rovings, wherein the blending ratio of the blended slivers, blended rovings, or blended yarn varies with a correlation, specifically a correlation with a 1/f fluctuation.Type: GrantFiled: July 2, 1996Date of Patent: May 19, 1998Assignees: Nisshinbo Industries Inc., Toshimitsu MushaInventors: Toshimitsu Musha, Yuichi Yanai, Kazuyoshi Muraoka, Yuki Niwa
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Patent number: 5727600Abstract: A weaving method that imparts a correlation of a 1/f fluctuation to the texture pattern of a woven fabric by passing warp yarns through a plural number of healds in a specific numerical sequence. The healds are then manipulated to separate the warp yarns into two sets to form a shed therebetween through which a weft yarn is inserted. For one texture pattern, warp yarns are threaded in groups in numbers corresponding to the values of a numerical sequence with a 1/f fluctuation through one set of healds. For another texture pattern, warp yarns are threaded in groups through another set of healds so as to alternate with the first groups, thereby weaving a plural number of texture patterns into the woven goods, with the overall texture design having a 1/f fluctuation.Type: GrantFiled: May 8, 1996Date of Patent: March 17, 1998Assignees: Nisshinbo Industries Inc., Toshimitsu MushaInventors: Toshimitsu Musha, Yuichi Yanai, Shoji Takagi, Shu Ono
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Patent number: RE36450Abstract: An apparatus and a method for automatically determining the present somatic state of a human subject. The characteristic values of the subject (e.g., scalp potential, muscle potential, heart-rate, eye-movement and frequency of eye blinks, or any combination thereof) are detected and output signals corresponding to the detected characteristic values are produced, amplified and digitized. The Fourier transformation is performed on the output signals. A set of state variables for each selected frequency sub-band of a selected frequency band for each of the output signals is determined. Sets of reference weights and sets of reference biases for a neural network from sets of state reference variables corresponding to known somatic states are formed. Each of the sets of state variables, the sets of reference weights and the sets of reference biases are applied to the neural network to determine present somatic state of the subject. The present somatic state of the subject is displayed.Type: GrantFiled: July 30, 1997Date of Patent: December 21, 1999Assignee: Brain Functions Laboratory, Inc.Inventor: Toshimitsu Musha