Snap Inc.

Nextmind Sas

Guillaume Ployart

Sid Kouider

Robin Zerafa

Nelson Steinmetz

Jeanne Vicerial

Hao Zhang

Arthur Biancarelli

Gaelle Gervais

Antoine Goupille

Adrien Jollet

Bastien Rechke

A method and system for tracking visual attention are disclosed. By generating at least one visual stimulus with a characteristic modulation, the characteristic modulation being applied to high spatial frequency, HSF, components of the visual stimulus and displaying the or each visual stimulus via a graphical user interface, GUI, of a display, a neural response may be induced in the user's brain. By receiving neural signals of a user from a neural signal capture device, such as an EEG device, a point of focus of the user (when the user views the visual stimulus) may be determined based on the neural signals, since the neural signals include information associated with the characteristic modulation of a visual stimulus to which the user's visual attention is directed.

Visual brain-computer interface

According to one aspect, the present description relates to a portable device () for acquiring electroencephalographic (EEG) signals emitted by a user. The portable device comprises a flexible support () intended to fit a localized region of the skull of the user and a set of sensors () of electrical signals generated by the neuronal activity of the user, arranged on said support () so as to form contacts with the scalp when the device is worn by the user. For each sensor, an electronic circuit for filtering and amplifying electrical signals detected by said sensor is incorporated in the flexible support () and forms, with said sensor, an active electrode. The portable device also comprises a housing () comprising an electronic system for processing signals from said electronic filtering and amplification circuits, said housing being linked mechanically to the flexible support to form, with said support, a means of attachment to a garment or accessory intended to be worn by the user.

Portable electroencephalography devices

Growing community of inventors

Paris, France

Guillaume Ployart