Methods and apparatus to gather and analyze electroencephalographic data
Example headsets and methods for gathering electroencephalographic signals are disclosed herein. An example headset includes an adjustment assembly including a first support to be disposed on a first side of a head of a person and a second support to be disposed on a second side of the head of the person. The example headset also includes an adjustor operatively coupled to the first support. Further, the example headset includes an electrode strip and a tension strap having a first end operatively coupled to the adjustor and a second end operatively coupled to the second support.
1. A method comprising:
adjusting a first adjustor to cause a first tension change in a first tension strap operatively coupled between a first support and a second support, the first support to be disposed on a first side of a head of a person and the second support to be disposed on a second side of the head of the person opposite the first side of the head of the person, the first tension change to cause the first tension strap to slide relative to a first electrode strip including a first electrode pin to thereby cause the first electrode strip to move to adjust a first distance of the first electrode strip relative to the head, the first electrode strip to be disposed over the head of the person such that a first end of the first electrode strip is disposed adjacent the first support and a second end of the first electrode strip is disposed adjacent the second support; and
gathering a first set of signals from the head using the first electrode pin.
2. The method of claim 1 , further including adjusting a second adjustor operatively coupled to the second support to cause a second tension change in the first tension strap.
3. The method of claim 1 , wherein adjusting the first adjustor causes a second tension change in a second tension strap operatively coupled between the first support and the second support, the second tension change to cause the second tension strap to slide relative to a second electrode strip including a second electrode pin to thereby cause the second electrode strip to move to adjust a second distance of the second electrode strip relative to the head.
4. The method of claim 1 , further including changing an effective length of the first tension strap by adjusting the first adjustor.
5. The method of claim 1 , wherein adjusting the first adjustor includes rotating a wheel.
6. The method of claim 1 , wherein adjusting the first adjustor includes actuating an electric motor.
7. The method of claim 1 , further including detaching the first adjustor from the first support to remove the first electrode strip.
8. The method of claim 1 , further including adjusting a second adjustor to alter a position of a third support to be disposed under a right ear of the person and a fourth support to be disposed under a left ear of the person relative to the first support, which is to be disposed above a right ear of the person, and the second support, which is to be disposed above a left ear of the person.
9. The method of claim 1 , wherein adjusting the first adjustor causes the first electrode pin to retract or extend from a first housing operatively coupled to the first electrode strip.
10. The method of claim 1 , further including adjusting a second adjustor to cause a second tension change in a second tension strap operatively coupled between the first support and the second support, the second tension change to cause the second tension strap to slide relative to a second electrode strip including a second electrode pin to thereby cause the second electrode strip to move to adjust a second distance of the second electrode strip relative to the head.
11. The method of claim 10 , wherein the first tension strap is operatively coupled to the first support via the first adjustor and the second tension strap is operatively coupled to the second support via the second adjustor.
12. The method of claim 10 , wherein the first electrode strip and the second electrode strip extend over the head of the person from a left side of the head to a right side of the head.
13. The method of claim 1 , wherein the first tension strap is disposed between the first electrode strip and the head of the person.
14. The method of claim 1 , wherein the first electrode pin extends from a housing coupled to the first electrode strip, the housing disposed between the first electrode strip and the head of the person, the housing including a first channel, the first tension strap extending through the first channel.
15. The method of claim 14 , wherein the housing includes a second channel, and wherein adjusting the first adjustor adjuster causes a second tension change in a second tension strap operatively coupled between the first support and the second support, the second tension strap extending through the second channel.
16. The method of claim 15 , wherein the first tension strap and the second tension strap traverse along a longitudinal axis of the first electrode strip.
17. The method of claim 14 , wherein the first electrode pin extends from a bottom surface of the housing, the bottom surface being curved to substantially conform to a curve of the head of the person.
18. The method of claim 1 , wherein a first end of the first tension strap is coupled to the first support via the first adjustor.
19. The method of claim 1 , wherein the first side is a left side of the head of the person and the second side is a right side of the head of the person.
20. The method of claim 1 , wherein the first end of the first electrode strip is spaced apart from the first support and the second end of the first electrode strip is spaced apart from the second support.