Electric device for measuring EEG signal or electric stimulation
Disclosed is an electronic device for measuring Electroencephalogram (EEG) signal or electronic stimulation, including at least: electrode modules that measures the EEG signal from a subject's head or apply current to the head; a control module that controls each of the electrode modules or applying current thereto; an EEG signal processing module that processes the EEG signal; an electric stimulation module that provides the electrode modules with a current for electric stimulation. The control module is further configured to: control each electrode module for measuring the EEG signal from the subject's head by controlling a switching module such that the each electrode module is connected with the EEG signal processing module; and control the each electrode module for applying current to the subject's head by controlling the switching module such that the each electrode module is connected with the electric stimulation module.
1. An electric device for measuring an Electroencephalogram (EEG) signal from a subject's head and for providing electric stimulation to the subject's head, the electric device comprising:
a plurality of electrode units configured to be attached to each different position of the head of the subject, and configured to
detect the EEG signal from the subject's head, and
supply electric current to the each different position, each of the plurality of electrode units including a plurality of microelectrodes forming an electric array;
an electric stimulation unit configured to supply electric current in order to provide the electric stimulation to the subject's head;
a switching unit connected to the electric stimulation unit and the plurality of electrode units, and configured to switch
the each of the plurality of electrode units to be selectively connected and
each of the plurality of microelectrodes to be selectively connected; and
a controller connected to the switching unit, and configured to
control the switching unit to be selectively connected to each of the plurality of the electrode units to receive the EEG signal from the subject's head through connected electrode unit among the plurality of electrode units, and
control the switching unit to selectively supply, through the switching unit and the connected electrode unit, the electric current from the electric stimulation unit to the subject's head,
wherein the controller is configured to control the switching unit to supply the electric current from the electric stimulation unit to the subject's head through the each of the plurality of the microelectrodes, and
wherein the controller is configured to
receive a first plurality of EEG signals detected from a first plurality of microelectrodes included in first electrode unit among the plurality of electrode units,
select at least one microelectrode, which is configured to simultaneously receive the EEG signal from the subject's head and supply the electric current to the subject's head, from the first plurality of microelectrodes based on the received first plurality of EEG signals,
receive a first EEG signal from the subject's head through the selected at least one microelectrode among the first plurality of microelectrodes, and
control, at the same time as receiving the first EEG signal, the switching unit to supply the electric current to the subject's head through the selected at least one microelectrode.
2. The electric device of claim 1 , wherein the controller is configured to select the at least one microelectrode from the first plurality of microelectrodes by comparing signal strength of the first plurality of EEG signals detected from the first plurality of microelectrodes with a standard EEG signal.
3. The electric device of claim 1 , further comprising a data storage connected to the controller, and configured to store EEG data previously detected from the subject's head,
wherein the EEG data includes information on detected position in the subject's head where the EEG data have been obtained, and
wherein the controller is configured to determine, based on the stored EEG data and the first plurality of EEG signals detected from the first plurality of microelectrodes included in the first electrode unit attached to a first area of the subject's head, a position of a first area in the subject's head.