摘要:
The determination system includes a presented-speech sound control section for determining a speech sound to be presented to a user; auditory/visual stimulation presentation sections for presenting the determined speech sound as an audio/a character; a group-wise summation section for taking a summation of an event-related potential of an electroencephalogram signal of the user for each group of speech sounds; a first determination section for, from the event-related potential having been subjected to summation for each group, making a group-by-group determination of comfortableness as to whether the user is comfortably hearing to the speech sound, to at least determine whether the user is listening to the speech sound with strife, or to determine whether the user is annoyed by the speech sound; and a second determination section for, from the event-related potential, making a speech sound-by-speech sound determination of intelligibility as to whether the user is clearly hearing the speech sound.
摘要:
In an exemplary assessment system of speech sound listening, an output section presents a speech sound to a user as an auditory stimulation; a positive component determination section determines whether a positive component appears in an event-related potential of an electroencephalogram signal of the user in a range from 600-900 ms from a starting point, the starting point being a point in time at which the speech sound is presented, and outputs an assessment result as to whether the user is listening to the speech sound with strife or not; and a negative component determination section determines whether a negative component appears in the event-related potential in a range from 100-300 ms from a starting point, the starting point being the point in time at which the speech sound is presented, and outputs an assessment result as to whether the user is annoyed by the speech sound or not.
摘要:
An adjustment device for a hearing aid includes: an audio extraction section for, through an acoustic process of a collected audio signal, utilizing information of a phoneme or syllable contained in the audio signal to output time information, the time information identifying a point of uttering the phoneme or syllable; an electroencephalogram measurement section for measuring an electroencephalogram signal of a user; a determination section for determining a difficulty of hearing of the phoneme or syllable by relying on an event-related potential in the electroencephalogram signal based on the identified point of uttering the phoneme or syllable as a starting point; a phoneme identification section for, when a plurality of phonemes or syllables are determined as difficult to hear, identifying a chronologically preceding phoneme or syllable among them to be difficult to hear; and a gain adjustment section for, with respect to the phoneme or syllable identified by the phoneme identification section, determining a gain adjustment method based on a type of the phoneme or syllable, and adjusting a gain for the phoneme or syllable in accordance with the determined gain adjustment method.
摘要:
An electroencephalogram interface system includes a biological signal detection section for detecting an electroencephalogram signal from a user and a control section for distinguishing a component of an event-related potential and causing a device to operate based on the distinguished event-related potential. An activation apparatus activates the control section and an output section for presenting a visual stimulation which flickers with a predetermined frequency based on a signal from the activation apparatus. The activation apparatus includes: a frequency analysis section for analyzing a frequency component of the electroencephalogram signal and detecting an intensity corresponding to the predetermined frequency; and a determination section for comparing the detected intensity of the predetermined frequency and a predetermined threshold, and if the intensity of the predetermined frequency is equal to or greater than a predetermined threshold, activating the control section.
摘要:
In a system having an interface utilizing electroencephalograms, a user's burden of calibration for accurately measuring electroencephalograms is eliminated, and it becomes possible to maintain a high distinction accuracy of electroencephalograms.An electroencephalogram interface (IF) system 1 includes an electroencephalogram IF section (13) for distinguishing a request of a user based on electroencephalograms, and identifies a function which is in accordance with the request. An electroencephalogram distinction method adjustment apparatus (2, 50) includes: an analysis section (14, 52) for detecting a change in a characteristic quantity of a stimulation given to the user, thus detecting a change in the stimulation; a storage section (15) for storing a waveform of an event-related potential during a period after a point in time when the change in the stimulation is detected; an extraction section (16) for extracting a characteristic quantity of the user based on the stored waveform; and an adjustment section (17) for, based on the extracted characteristic quantity, adjusting in the electroencephalogram IF section (13) a distinction method for a request based on an electroencephalogram signal.
摘要:
A response content determination section determines a response content in response to a request from a user which is received by an input section, and an output section outputs the response content. A biological signal detection section measures a biological signal of the user from an output timing of the output section as a starting point, and a disappointment judgment section judges, based on the biological signal, whether or not the response content matches the request of the user.
摘要:
A judgment section (200) judges the presence or absence of a specific event-related potential in an event-related potential of user's (50) electroencephalogram measured by a biological signal detection section (101). A judgment standard storage section (203) stores a plurality of judgment standards according to the number of occurrences of the specific event-related potential. A user's state judging section (201) obtains the number of occurrences of the specific event-related potential by referring to a judgment result storage section (20) and selects any of the judgment standards in the judgment standard storage section (203) according to the obtained number of occurrences thereof for judgment.
摘要:
An input section (101) receives a manipulation input of a user (50). A biological signal detection section (102) measures an event-related potential of electroencephalogram of the user (50). An operation error judgment section (103) judges using the event-related potential of the electroencephalogram of the user (50) at around 300 ms from a timing when the input section (101) receives the manipulation input as a starting point whether or not the manipulation input is due to an operation error of the user. An equipment operation control section (104) determines an operation of an equipment (1) based on a result of judgment by the operation error judgment section (103).
摘要:
In a biological signal utilizing appliance, an appliance control section controls the appliance in accordance with user's manipulation. At that time, an operation content is presented to a user through an operation presentation section. A biological signal detection section measures user's biological signal and detects from the biological signal the presence or absence of an event-related potential at the time point when time obtained by adding a predetermined shift time of approximately 150 ms to 600 ms elapses after a timing, as a starting point, when the operation content is presented. Upon detection of the event-related potential, a manipulation cancellation section instructs the appliance control section to cancel the presented operation content.
摘要:
A speech discriminability assessment system includes: a biological signal measurement section for measuring an electroencephalogram signal of a user; a presented-speech sound control section for determining a speech sound to be presented to the user by referring to a speech sound database retaining a plurality of monosyllabic sound data; an audio presentation section for presenting an audio associated with the determined speech sound to the user; a character presentation section for presenting a character associated with the determined speech sound to the user, subsequent to the presentation of the audio by the audio presentation section; an unexpectedness detection section for detecting presence or absence of an unexpectedness signal from the measured electroencephalogram signal of the user, the unexpectedness signal representing a positive component at 600 ms±100 ms after a time point when the character was presented to the user; and a speech sound discriminability determination section for determining a speech sound discriminability based on a result of detection by the unexpectedness detection section.