1. A computer implemented method for processing an integer N of input EEG signals comprising executing on the N EEG signals a principal component analysis generating N output signals.
2. The method according to claim 1 further comprising, for each pair of an input EEG signal and an output signal, calculating a value of a parameter indicative of a similarity between the output signal and the EEG signal.
3. The method according to claim 2 wherein calculating a value of a parameter indicative of a similarity of an output signal with an EEG signal comprises calculating a variance of the EEG signal explained by the output signal.
4. A computer implemented method for locating an epileptic focus comprising:
(a) obtaining an integer N of ictal EEG signals;
(b) executing on the integer N of ictal EEG signals a principal component analysis generating N output signals; and
(c) locating the epileptic focus in a process involving one or more of the N output signals.
5. The method according to claim 4 wherein the step of locating the epileptic focus comprises:
(a) for each of one or more of the N EEG signals, determining a value of a parameter indicative of a similarity of a selected output signal with the EEG signal; and
(b) locating the epileptic focus by executing an inverse algorithm on the determined values of the parameter.
6. The method according to claim 5 wherein the selected output signal explains most of the variance of the N EEG signals.
7. The method according to claim 5, wherein the inverse algorithm is a linear inverse algorithm.
8. The method according to claim 5, wherein the inverse algorithm is a non-linear inverse algorithm.
9. The method according to claim 5, wherein the step of determining a value of a parameter indicative of a similarity of the selected output signal with an EEG signal comprises determining a variance of the EEG signal explained by the output signal.
10. A system for processing an integer N of EEG signals comprising a processor configured to execute on the N EEG signals a principal component analysis generating N output signals.
11. The system according to claim 10 wherein the processor is further configured, for each pair of an EEG signal and an output signal, to calculate a value of a parameter indicative of a similarity between the output signal and the EEG signal.
12. The system according to claim 11 wherein the processor is configured to calculate a value of a parameter indicative of a similarity of an output signal with a predetermined EEG signal by calculating a variance of the EEG signal explained by the output signal.
13. A system for locating an epileptic focus comprising:
(a) An integer N of electrodes obtaining an integer N of EEG signals; and
(b) A processor configured to execute on the integer N of EEG signals a principal component analysis generating N output signals, and to locate the epileptic focus by a method involving the one or more of the n output signals.
14. The system according to claim 13 wherein the processor is configured to locate the epileptic focus by a method comprising:
(a) for each of one or more of the N EEG signals, to determine a value of a parameter indicative of a similarity of a selected output signal with the EEG signal; and
(b) to locate the epileptic focus by executing an inverse algorithm on the determined values of the parameter.
15. The system according to claim 14, wherein the inverse algorithm is a linear inverse algorithm.
16. The system according to claim 14, wherein the inverse algorithm is a non-linear inverse algorithm.
17. The system according to claim 14, wherein the processor is configured to calculate a value of a parameter indicative of a similarity of an output signal with an EEG signal by calculating a variance of the EEG signal explained by the output signal.
18. A computer implemented program storage device readable by machine, tangibly embodying a program of instructions executable by the machine to perform method steps for processing an integer N of EEG signals comprising executing on the N EEG signals a principal component analysis generating N output signals.
19. A computer implemented computer program product comprising a computer useable medium having computer readable program code embodied therein for processing an integer N of EEG signals, the computer program product comprising executing on the N EEG signals a principal component analysis generating N output signals.
20. A computer implemented program storage device readable by machine, tangibly embodying a program of instructions executable by the machine to perform method steps for locating an epileptic focus comprising:
(a) obtaining an integer N of ictal EEG signals; and
(b) executing on the integer N of ictal EEG signals a principal component analysis generating N output signals.
21. A computer implemented computer program product comprising a computer useable medium having computer readable program code embodied therein for locating an epileptic focus, the computer program product comprising:
computer readable program code for causing the computer to execute on an integer N of EEG signals a principal component analysis generating N output signals.
22. A computer program comprising computer program code means for performing all the steps of claim 1 when said program is run on a computer.
23. A computer program as claimed in claim 22 embodied on a computer readable medium.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A light-emitting element comprising:
a light-transmitting electrode;
a first light-emitting layer over the light-transmitting electrode;
a first intermediate layer over the first light-emitting layer;
a second light-emitting layer over the first intermediate layer;
a second intermediate layer over the second light-emitting layer;
a third light-emitting layer over the second intermediate layer; and
a light-reflecting electrode over the third light-emitting layer,
wherein a peak of a spectrum of light emitted from the first light-emitting layer is located on a longer wavelength side as compared to a peak of a spectrum of light emitted from the second light-emitting layer and a peak of a spectrum of light emitted from the third light-emitting layer,
wherein the peak of the spectrum of light emitted from the second light-emitting layer is located on a shorter wavelength side as compared to the peak of the spectrum of light emitted from the first light-emitting layer and the peak of the spectrum of light emitted from the third light-emitting layer,
wherein an optical path length between the light-reflecting electrode and the first light-emitting layer is three fourths of a peak wavelength of light emitted from the first light-emitting layer,
wherein an optical path length between the light-reflecting electrode and the second light-emitting layer is three fourths of a peak wavelength of light emitted from the second light-emitting layer, and
wherein an optical path length between the light-reflecting electrode and the third light-emitting layer is one fourth of a peak wavelength of light emitted from the third light-emitting layer.
2. The light-emitting element according to claim 1, wherein the first light-emitting layer includes a light-emitting substance that emits light with a peak in a yellow to orange wavelength range, and the light-emitting substance is a phosphorescent compound.
3. The light-emitting element according to claim 1, wherein the second light-emitting layer includes a light-emitting substance that emits light with a peak in a blue wavelength range, and the light-emitting substance is a fluorescent compound.
4. The light-emitting element according to claim 1, wherein the third light-emitting layer includes a light-emitting substance that emits light in a wavelength shorter than or equal to the wavelength of light emitted from the first light-emitting layer.
5. The light-emitting element according to claim 1, wherein a total thickness of the first light-emitting layer, the second light-emitting layer, the third light-emitting layer, the first intermediate layer, and the second intermediate layer is 400 nm or less.
6. The light-emitting element according to claim 1, wherein the light-reflecting electrode serves as a cathode.
7. The light-emitting element according to claim 1, wherein the first light-emitting layer comprises a yellow to orange emission light-emitting substance, the second light-emitting layer comprises a blue emission light-emitting substance, and the third light-emitting layer comprises a yellow to orange emission light-emitting substance.
8. A lighting device including the light-emitting element according to claim 1.
9. The light-emitting element according to claim 1, a thickness of the first light-emitting layer is larger than a thickness of the second light-emitting layer.
10. A light-emitting element comprising:
a light-transmitting electrode;
a first light-emitting layer over the light-transmitting electrode;
a first intermediate layer over the first light-emitting layer;
a second light-emitting layer over the first intermediate layer;
a second intermediate layer over the second light-emitting layer;
a third light-emitting layer over the second intermediate layer; and
a light-reflecting electrode over the third light-emitting layer,
wherein a peak of a spectrum of light emitted from the first light-emitting layer is located on a longer wavelength side as compared to a peak of a spectrum of light emitted from the second light-emitting layer and a peak of a spectrum of light emitted from the third light-emitting layer,
wherein the peak of the spectrum of light emitted from the second light-emitting layer is located on a shorter wavelength side as compared to the peak of the spectrum of light emitted from the first light-emitting layer and the peak of the spectrum of light emitted from the third light-emitting layer,
wherein the light-emitting element exhibits white emission,
wherein an optical path length between the light-reflecting electrode and the first light-emitting layer is three fourths of a peak wavelength of light emitted from the first light-emitting layer,
wherein an optical path length between the light-reflecting electrode and the second light-emitting layer is three fourths of a peak wavelength of light emitted from the second light-emitting layer,
wherein an optical path length between the light-reflecting electrode and the third light-emitting layer is one fourth of a peak wavelength of light emitted from the third light-emitting layer, and
wherein each of the first intermediate layer, and the second intermediate layer include any one selected in a group of molybdenum oxide, vanadium oxide, rhenium oxide and ruthenium oxide.
11. The light-emitting element according to claim 10, wherein the first light-emitting layer includes a light-emitting substance that emits light with a peak in a yellow to orange wavelength range, and the light-emitting substance is a phosphorescent compound.
12. The light-emitting element according to claim 10, wherein the second light-emitting layer includes a light-emitting substance that emits light with a peak in a blue wavelength range, and the light-emitting substance is a fluorescent compound.
13. The light-emitting element according to claim 10, wherein the third light-emitting layer includes a light-emitting substance that emits light in a wavelength shorter than or equal to the wavelength of light emitted from the first light-emitting layer.
14. The light-emitting element according to claim 10, wherein a total thickness of the first light-emitting layer, the second light-emitting layer, the third light-emitting layer, the first intermediate layer, and the second intermediate layer is 400 nm or less.
15. The light-emitting element according to claim 10, wherein the light-reflecting electrode serves as a cathode.
16. The light-emitting element according to claim 10, wherein the first light-emitting layer comprises a yellow to orange emission light-emitting substance, the second light-emitting layer comprises a blue emission light-emitting substance, and the third light-emitting layer comprises a yellow to orange emission light-emitting substance.
17. A lighting device including the light-emitting element according to claim 10.
18. A light-emitting element comprising:
a light-transmitting electrode;
a first light-emitting layer over the light-transmitting electrode;
a first intermediate layer over the first light-emitting layer;
a second light-emitting layer over the first intermediate layer;
a second intermediate layer over the second light-emitting layer;
a third light-emitting layer over the second intermediate layer; and
a light-reflecting electrode over the third light-emitting layer,
wherein a peak of a spectrum of light emitted from the first light-emitting layer is located on a longer wavelength side as compared to a peak of a spectrum of light emitted from the second light-emitting layer and a peak of a spectrum of light emitted from the third light-emitting layer,
wherein the peak of the spectrum of light emitted from the second light-emitting layer is located on a shorter wavelength side as compared to the peak of the spectrum of light emitted from the first light-emitting layer and the peak of the spectrum of light emitted from the third light-emitting layer,
wherein an optical path length between the light-reflecting electrode and the first light-emitting layer is three fourths of a peak wavelength of light emitted from the first light-emitting layer,
wherein an optical path length between the light-reflecting electrode and the second light-emitting layer is three fourths of a peak wavelength of light emitted from the second light-emitting layer,
wherein an optical path length between the light-reflecting electrode and the third light-emitting layer is one fourth of a peak wavelength of light emitted from the third light-emitting layer, and
wherein each of the first intermediate layer, and the second intermediate layer include any one selected in a group of molybdenum oxide, vanadium oxide, rhenium oxide and ruthenium oxide.
19. The light-emitting element according to claim 18, wherein the first light-emitting layer includes a light-emitting substance that emits light with a peak in a yellow to orange wavelength range, and the light-emitting substance is a phosphorescent compound.
20. The light-emitting element according to claim 18, wherein the second light-emitting layer includes a light-emitting substance that emits light with a peak in a blue wavelength range, and the light-emitting substance is a fluorescent compound.
21. The light-emitting element according to claim 18, wherein the third light-emitting layer includes a light-emitting substance that emits light in a wavelength shorter than or equal to the wavelength of light emitted from the first light-emitting layer.
22. The light-emitting element according to claim 18, wherein a total thickness of the first light-emitting layer, the second light-emitting layer, the third light-emitting layer, the first intermediate layer, and the second intermediate layer is 400 nm or less.
23. The light-emitting element according to claim 18, wherein the light-reflecting electrode serves as a cathode.
24. The light-emitting element according to claim 18, wherein the first light-emitting layer comprises a yellow to orange emission light-emitting substance, the second light-emitting layer comprises a blue emission light-emitting substance, and the third light-emitting layer comprises a yellow to orange emission light-emitting substance.
25. A lighting device including the light-emitting element according to claim 18.