Abstract:
An auditory event-related potential measurement system includes: a video output section configured to present a video to a user; a measurement section configured to measure a user's electroencephalogram signal; a scheduling section configured to schedule a timing of presenting an auditory stimulation so that the auditory stimulation is presented during a period in which the video is being presented to the user; an auditory stimulation output section configured to present the auditory stimulation to the user at the scheduled timing; and a processing section configured to acquire, from the electroencephalogram signal, an event-related potential in a first time range as reckoned from a point in time at which the auditory stimulation is presented. When an amount of video luminance change exceeds a threshold value, the auditory stimulation is not presented during a second time range as reckoned from a point in time at which the threshold value is exceeded.
Abstract:
Provided is an image display system which can assuredly perform collaborative processing such as determination of a fatigue state of a viewer using three-dimensional eyeglasses and an image display apparatus, without increasing system scale, the image display system including: a transmitting and receiving unit included in a three-dimensional display TV which transmits to three-dimensional eyeglasses a specification-designating signal designating a specification which at least includes a data format for a communication signal; a transmitting and receiving unit included in the three-dimensional eyeglasses which receives the specification-designating signal transmitted from the three-dimensional display TV and, according to the specification designated by the received specification-designating signal, converts a biometric signal acquired by a biometric signal sensor into the communication signal, and transmits the communication signal to the three-dimensional display TV.
Abstract:
A concentration presence/absence determining device includes: a brain blood flow volume obtaining unit configured to obtain a brain blood flow volume of the user; a varying threshold obtaining unit configured to obtain a varying threshold that is a value smaller than the brain blood flow volume of the user at a base time; and an determining unit configured to determine that the user concentrates, when the brain blood flow volume obtained by the brain blood flow volume obtaining unit falls below the varying threshold obtained by the varying threshold obtaining unit.
Abstract:
A sound pressure assessment system determines sounds to be presented by referring to a database retaining data of sounds, each of which is a pure tone. The system presents the determined sound as a first sound, and in a predetermined time after presenting the first sound, presents as a second sound a sound at least having the same frequency and the same sound pressure level as those of the'first sound to the user. The system extracts an amount of change from an N1 component in response to the first sound to that in response to the second sound. The N1 components are negative components of an user's event-related potential based on points of presenting the first and second sounds as respective starting points. The system determines whether the sound pressure level of the presented sound is excessive to the user, based on the amount of change.
Abstract:
Provided is a stereoscopic video presenting apparatus including: an eye movement measurement unit configured to measure an eye movement of each of users viewing the stereoscopic video; a user count determination unit configured to determine the number of users viewing a same stereoscopic video; and a failure state determination unit configured to compare, when the user count determination unit determines that the number of users viewing the same stereoscopic video is plurality, eye movements of a plurality of users to determine a user whose eye movement is in a failure state among the plurality of users.
Abstract:
Provided is a convergence performance determination device including an eye information acquisition unit configured to acquire eye information which is information on eye movements of a user when viewing a stereoscopic video; a convergence movement calculation unit configured to calculate amounts of convergence movement each indicating a degree of a convergence eye movement of the user, based on the eye information acquired by the eye information acquisition unit; and a determination unit configured to determine convergence eye movement performance of the user by comparing between distribution data indicating a distribution of the amounts of convergence movement calculated by the convergence movement calculation unit in an evaluation interval which is a predetermined playback time interval of the stereoscopic video being viewed by the user and distribution data indicating a distribution of the amounts of convergence movement determined in accordance with depth information on the stereoscopic video in the evaluation interval.