Apparatus and method for measuring electroencephalogram
First Claim
1. An electroencephalogram measuring apparatus comprising:
- an electroencephalogram detection unit which detects electroencephalogram data;
an electroencephalogram amplifying unit which amplifies the electroencephalogram data measured in the electroencephalogram detection unit;
an A/D converting unit which converts the amplified electroencephalogram data from an analog signal to a digital signal;
an electroencephalogram processing unit which, using the electroencephalogram data which is converted into a digital signal, outputs an output value for each frequency at each time interval for the ground state of an experimentee, and determines whether or not noise waves are combined with the electroencephalogram; and
a display unit which displays the result of the electroencephalogram processing unit.
2 Assignments
0 Petitions
Accused Products
Abstract
An electroencephalogram measuring apparatus and method. The electroencephalogram measuring method includes detecting electroencephalogram data of an experimentee, amplifying the detected electroencephalogram data, and converting the data into a digital signal. Also, provided is a high-speed Fourier transforming the converted digital electroencephalogram data, calculating an output value for each frequency of the Fourier transformed electroencephalogram, calculating an output value for each frequency of the electroencephalogram for a predetermined time interval and calculating a relative output value for the ground state of the experimentee. Further provided is comparing the calculated relative output value for each frequency for each predetermined time interval for the ground state of the experimentee, with a predetermined value.
-
Citations
8 Claims
-
1. An electroencephalogram measuring apparatus comprising:
-
an electroencephalogram detection unit which detects electroencephalogram data;
an electroencephalogram amplifying unit which amplifies the electroencephalogram data measured in the electroencephalogram detection unit;
an A/D converting unit which converts the amplified electroencephalogram data from an analog signal to a digital signal;
an electroencephalogram processing unit which, using the electroencephalogram data which is converted into a digital signal, outputs an output value for each frequency at each time interval for the ground state of an experimentee, and determines whether or not noise waves are combined with the electroencephalogram; and
a display unit which displays the result of the electroencephalogram processing unit. - View Dependent Claims (2, 3, 4, 5, 6, 7)
-
-
8. An electroencephalogram measuring method comprising:
-
detecting the electroencephalogram data of an experimentee;
amplifying the detected electroencephalogram data, and converting the data into a digital signal;
high-speed Fourier transforming the converted digital electroencephalogram data;
calculating an output value for each frequency of the Fourier transformed electroencephalogram;
calculating an output value for each frequency of the electroencephalogram for a predetermined time interval;
calculating a relative output value for the ground state of the experimentee, by dividing the output value for each frequency at each predetermined time interval by the output value for each frequency of the ground state of the corresponding experimentee; and
comparing the calculated relative output value for each frequency for each predetermined time interval for the ground state of the experimentee, with a predetermined value, and if the relative output value for each frequency for each predetermined time interval for the ground state of the experimentee is less than the predetermined value, determining that noise waves are not combined with the electroencephalogram, and outputting the electroencephalogram data, and if the relative output value for each frequency for each predetermined time interval for the ground state of the experimentee is greater than the predetermined value, determining that noise waves are combined with electroencephalogram, and not outputting the electroencephalogram data.
-
Specification