Abstract: The device of the present invention can automatically extract words under accurately controlled set conditions. A word presenting means presents words to a subject, a biological activity measuring means measures the biological activity in the subject, and a calculation means receives a biological activity signal from the biological activity measuring means and calculates time from presenting the words until detecting a biological activity by the subject accompanied with the word. The calculation means is equipped with a word database where word data indicating words are stored and can be presented to the subject, a category data of the words and attribute data of the words are related and also stored, respectively, and a word extractor to search the word database and to extract the word data belonging to or relating to a predetermined category, and, satisfying predetermined word attribute, based upon the search conditions.

Abstract: A visual training device 1 including: a screen arranged facing a subject H having visual impairment; a line of vision detection unit that detects a line of vision of the subject H and outputs line of vision signals indicating the line of vision; a visual field data storage unit that stores visual field data indicating the visible area AR2 and the area of visual impairment AR1 of the subject H; and a screen control unit 53 that, on the aforementioned screen, moves the visible area AR2 specified based on the aforementioned visual field data in correspondence to the movement of the line of vision of the subject H specified by the aforementioned line of vision signals. The display format of the visible area AR2 or a region including the vicinity thereof, is displayed different from the display format of the other region. By doing this, an attitudinal barrier of the person with visual impairment, the subject, can be removed, and the visual training device can allow easy training to be provided.

Abstract: A method of solving magnetoencephalographic and electroencephalographic inverse problems provides better grouping of moments of equivalent current dipoles than conventional methods. Locations of dipoles are fixed based on information using fMRI or the like. The magnitudes and orientations of the dipole moments are adjusted to fit magnetic fields and/or electrical potential distributions produced by the dipoles to magnetoencephalographically and/or electroencephalographically measured data. The method also includes grouping the dipoles in two stages, using the correlation coefficient of the magnitudes of the dipole moments as a criterion.

Abstract: The device of the present invention can automatically extract words under accurately controlled set conditions. A word presenting means presents words to a subject, a biological activity measuring means measures the biological activity in the subject, and a calculation means receives a biological activity signal from the biological activity measuring means and calculates time from presenting the words until detecting a biological activity by the subject accompanied with the word. The calculation means is equipped with a word database where word data indicating words are stored and can be presented to the subject, a category data of the words and attribute data of the words are related and also stored, respectively, and a word extractor to search the word database and to extract the word data belonging to or relating to a predetermined category, and, satisfying predetermined word attribute, based upon the search conditions.

Abstract: A visual training device 1 including: a screen arranged facing a subject H having visual impairment; a line of vision detection unit that detects a line of vision of the subject H and outputs line of vision signals indicating the line of vision; a visual field data storage unit that stores visual field data indicating the visible area AR2 and the area of visual impairment AR1 of the subject H; and a screen control unit 53 that, on the aforementioned screen, moves the visible area AR2 specified based on the aforementioned visual field data in correspondence to the movement of the line of vision of the subject H specified by the aforementioned line of vision signals. The display format of the visible area AR2 or a region including the vicinity thereof, is displayed different from the display format of the other region. By doing this, an attitudinal barrier of the person with visual impairment, the subject, can be removed, and the visual training device can allow easy training to be provided.

Abstract: A method of solving magnetoencephalographic and electroencephalographic inverse problems provides better grouping of moments of equivalent current dipoles than conventional methods. Locations of dipoles are fixed based on information using fMRI or the like. The magnitudes and orientations of the dipole moments are adjusted to fit magnetic fields produced by the dipoles to encephalographically measured data. The method also includes grouping the dipoles in two stages, using the correlation coefficient of the magnitudes of the dipole moments as a criterion.

Abstract: A plurality of SQUID flux sensors are supplied with their respective bias currents at the same time from a bias source. A superconducting multiplexer multiplexes output signals of the SQUID flux sensors during an interval of time when the bias currents are supplied to the SQUID flux sensors. A multiplexer, placed in a room-temperature environment, distributes each of the multiplexed output signals of the SQUID flux sensors to a respective one of the output terminals which correspond to the SQUID flux sensors. Each signal which has been output to an individual output terminal is counted by a counter, so that an external magnetic flux to a corresponding SQUID flux sensor is measured.

Abstract: An apparatus for eliminating a magnetic flux from a superconducting circuit comprises a substrate on which a superconducting circuit is formed, a heating fixture including resistance heating elements and provided in the vicinity of the superconducting circuit, a driving unit connected to the heating fixture for energizing the same by supplying a drive current to each resistance heating elements in the heating fixture. The heating fixture is so configured that, upon energization of the resistance heating elements in the heating fixture, there is formed a region of normal conduction state characterized by a temperature that exceeds the critical temperature of the normal conduction-superconduction transition, in at least a part of the superconducting circuit, and such that the heating fixture produces a minimized magnetic field upon the energization of the resistance heating elements.

Abstract: A superconducting pickup coil is provided for interlinking with an unknown magnetic flux and causing an induction current to flow. A superconducting detector is provided magnetically coupled with the superconducting pickup coil for producing output voltage pulses in response to the unknown magnetic flux. A superconducting feedback circuit is provided connected to the superconducting detector for receiving the output voltage pulses therefrom and feeding back a feedback magnetic flux to the superconducting pickup coil in response to each output voltage pulse such that the feedback magnetic flux counteracts the unknown magnetic flux. A resistance fixture is provided in the vicinity of the superconducting pickup coil for causing a transition in a part of the superconducting pickup coil from a superconducting state to a normal conducting state in response to the drive current.

Abstract: A plurality of superconducting quantum interference magnetometers are provided corresponding to a plurality of channels. Each of the superconducting quantum interference magnetometers is accommodated in a cooling vessel and has a superconducting detection loop for interlinking with the unknown magnetic flux. A superconducting magnetic sensor is magnetically coupled to the superconducting detection loop for producing an output voltage pulse. A feedback circuit, supplied with the output voltage pulse from the superconducting magnetic sensor, produces a magnetic flux that counteracts the unknown magnetic flux in response to each output voltage pulse. A gate circuit is provided between the superconducting magnetic sensor and the feedback means for controlling the supplying of the output voltage pulse from the superconducting magnetic sensor to the feedback circuit. The gate circuit is supplied with a control signal and selectively passes the output voltage pulse in response to a logic level of the control signal.

Abstract: A SQUID system, such as a SQUID magnetometer, including a SQUID and a bias circuit supply a pulsed bias current to cause an output of a pulsed output from an injection point in the SQUID. The SQUID has a predetermined threshold characteristic which is asymmetrical with respect to a coordinate defined by a current to be measured and flowing through a first junction line and the bias current. The bias current supplied from the bias circuit comprises pulses which are alternately positive polarity pulses and negative polarity pulses, and has a first frequency. The threshold characteristic and the bias current are defined to output an output signal comprising pulses, the number thereof being proportional to the current to be measured and a polarity thereof corresponding to a polarity of the current to be measured.

Abstract: A Josephson-junction logic circuit comprises at least one Josephson-junction logic gate which has a variable threshold-type superconductive quantum interference element. The Josephson-junction logic gate comprises a superconductive inductance loop, and at least two Josephson junctions included in the superconductive loop. At least two current-injection lines connected to the superconductive loop and at least one magnetically coupled line are provided. The magnetically coupled line is placed so as to be magnetically coupled to the inductance. Because of this construction, the number of inputs can be increased. Also, various logical functions can be obtained. Further, various logic circuits can be formed by simply changing the photomask for the wiring between the gates.