1 00:00:07,400 --> 00:00:05,990 is it on okay now time okay okay good 2 00:00:08,990 --> 00:00:07,410 morning everyone I am going to talk 3 00:00:11,240 --> 00:00:09,000 about an EEG experiment with Bill 4 00:00:15,530 --> 00:00:11,250 Bankston and I'm going to jump right 5 00:00:17,000 --> 00:00:15,540 into the data there's a lot to say I'm 6 00:00:19,700 --> 00:00:17,010 going to skip right through here here's 7 00:00:21,890 --> 00:00:19,710 the basic design of the experiment early 8 00:00:24,140 --> 00:00:21,900 on I took a look at the data and I 9 00:00:26,900 --> 00:00:24,150 started taking interest in this one 10 00:00:28,820 --> 00:00:26,910 right here I started digging into it and 11 00:00:30,800 --> 00:00:28,830 even though there are a lot of different 12 00:00:33,620 --> 00:00:30,810 interesting aspects of the data I took a 13 00:00:34,790 --> 00:00:33,630 look at one aspect and so that's what 14 00:00:36,260 --> 00:00:34,800 we're gonna be looking at today that's 15 00:00:37,970 --> 00:00:36,270 that's what's been done so far and if 16 00:00:42,500 --> 00:00:37,980 that seems a little incomplete to you 17 00:00:44,270 --> 00:00:42,510 that's because it is but that's but 18 00:00:45,709 --> 00:00:44,280 that's what we have so far and so I'm 19 00:00:47,779 --> 00:00:45,719 going to tell you what's been done how 20 00:00:53,299 --> 00:00:47,789 it's been done and some of the curious 21 00:00:55,310 --> 00:00:53,309 data that's resulted from it here is the 22 00:00:57,709 --> 00:00:55,320 montage for those who know and care 23 00:00:59,330 --> 00:00:57,719 about such things for the rest of you 24 00:01:01,700 --> 00:00:59,340 just take a look at the placement of 25 00:01:03,830 --> 00:01:01,710 those electrodes are going to be the 26 00:01:07,640 --> 00:01:03,840 same placements as when we look at a 27 00:01:10,730 --> 00:01:07,650 spectral display and here's bills 28 00:01:12,320 --> 00:01:10,740 baseline of his eyes open right before 29 00:01:15,289 --> 00:01:12,330 he is doing the healing sessions and 30 00:01:16,730 --> 00:01:15,299 just just just glanced at it we're going 31 00:01:17,960 --> 00:01:16,740 to be looking at the back of the head 32 00:01:19,820 --> 00:01:17,970 primarily and we're going to be looking 33 00:01:22,730 --> 00:01:19,830 around eight Hertz and that would be 34 00:01:24,770 --> 00:01:22,740 right here if there's only one spectral 35 00:01:26,719 --> 00:01:24,780 display or only one box showing it's 36 00:01:31,130 --> 00:01:26,729 going to be this P Z location in the 37 00:01:33,170 --> 00:01:31,140 back of the head in the center so that's 38 00:01:35,289 --> 00:01:33,180 eyes open and that's relevant because he 39 00:01:37,850 --> 00:01:35,299 did his healings with his eyes open and 40 00:01:41,450 --> 00:01:37,860 yet it looks a lot more like eyes closed 41 00:01:44,210 --> 00:01:41,460 and here here's a session that we're 42 00:01:45,770 --> 00:01:44,220 going to be focusing on and that's a lot 43 00:01:49,130 --> 00:01:45,780 more like eyes closed and that has very 44 00:01:51,499 --> 00:01:49,140 big waves in the back of his head the 45 00:01:55,060 --> 00:01:51,509 difference being that the frequency is 46 00:01:57,230 --> 00:01:55,070 lower and the amplitude is higher 47 00:01:59,810 --> 00:01:57,240 another thing that's interesting to note 48 00:02:02,090 --> 00:01:59,820 is that this peak right here is the same 49 00:02:04,130 --> 00:02:02,100 and is reflected on the right back side 50 00:02:06,260 --> 00:02:04,140 of the head whereas the other peak is 51 00:02:07,580 --> 00:02:06,270 more reflected on the left and this is a 52 00:02:10,759 --> 00:02:07,590 little deceptive here 53 00:02:15,440 --> 00:02:10,769 this does Twin Peaks because in most of 54 00:02:17,119 --> 00:02:15,450 the time the left is dominating on the 55 00:02:18,979 --> 00:02:17,129 higher frequency and it's just the 56 00:02:22,699 --> 00:02:18,989 occasional bursts that bring up that 57 00:02:26,539 --> 00:02:22,709 second lower peak okay here's the data 58 00:02:27,860 --> 00:02:26,549 set itself this blue right here 59 00:02:32,030 --> 00:02:27,870 indicates that we're going to we're 60 00:02:33,470 --> 00:02:32,040 going to erase this section of data from 61 00:02:35,660 --> 00:02:33,480 a spectral analysis if we were going to 62 00:02:38,780 --> 00:02:35,670 analyze this whole this whole set here 63 00:02:40,160 --> 00:02:38,790 and these waves right here correspond to 64 00:02:42,140 --> 00:02:40,170 those big spikes were looking at earlier 65 00:02:45,410 --> 00:02:42,150 so these are these big waves in the back 66 00:02:47,030 --> 00:02:45,420 of the head so here would be a selection 67 00:02:48,729 --> 00:02:47,040 of data and this is how I started 68 00:02:51,440 --> 00:02:48,739 looking at it I just started looking at 69 00:02:54,080 --> 00:02:51,450 snapshots like this here's a second and 70 00:02:56,240 --> 00:02:54,090 a half of data and then when I bring up 71 00:02:59,150 --> 00:02:56,250 a spectral analysis I'll see a peak like 72 00:03:01,729 --> 00:02:59,160 this and did this many times just just 73 00:03:03,319 --> 00:03:01,739 looking around and when I went up with 74 00:03:05,809 --> 00:03:03,329 my mouse over the top of that peak the 75 00:03:08,930 --> 00:03:05,819 software will tell me what frequency it 76 00:03:11,840 --> 00:03:08,940 is and here comes up 7.81 and I did this 77 00:03:14,720 --> 00:03:11,850 many times I would see I would see a 78 00:03:16,400 --> 00:03:14,730 little one second bursts of these or 79 00:03:18,470 --> 00:03:16,410 even half second verse of these and then 80 00:03:23,420 --> 00:03:18,480 I would surround it and it would keep 81 00:03:25,069 --> 00:03:23,430 coming up 7.81 and that number seemed 82 00:03:27,620 --> 00:03:25,079 familiar to me and I just like what is 83 00:03:29,330 --> 00:03:27,630 going on with that number and then and 84 00:03:31,580 --> 00:03:29,340 then I stopped looking at the power 85 00:03:32,900 --> 00:03:31,590 spectra which which squares all the 86 00:03:34,819 --> 00:03:32,910 amplitudes and just started looking at 87 00:03:36,289 --> 00:03:34,829 straight amplitude then it started 88 00:03:39,319 --> 00:03:36,299 seeing secondary peaks and started 89 00:03:40,789 --> 00:03:39,329 measuring what those were and so then 90 00:03:45,830 --> 00:03:40,799 the pattern emerged that it would be 91 00:03:47,599 --> 00:03:45,840 7.81 and 15.6 too and it didn't take me 92 00:03:52,500 --> 00:03:47,609 long to realize that was an exact double 93 00:03:56,130 --> 00:03:52,510 and so yeah thnkx my math fantastic 94 00:03:58,530 --> 00:03:56,140 so so I kept seeing that pattern and and 95 00:04:00,390 --> 00:03:58,540 I I couldn't remember from years ago 96 00:04:02,910 --> 00:04:00,400 when I worked at a biofeedback clinic I 97 00:04:04,470 --> 00:04:02,920 could remember anything about EEG 98 00:04:07,050 --> 00:04:04,480 harmonics I couldn't remember anything 99 00:04:08,640 --> 00:04:07,060 about alpha harmonics I googled it I 100 00:04:10,890 --> 00:04:08,650 looked in books I hope I picked up the 101 00:04:12,330 --> 00:04:10,900 phone I didn't see anything but i just 102 00:04:14,580 --> 00:04:12,340 thought i took a note of it and i kept 103 00:04:20,340 --> 00:04:14,590 looking for it until i saw this one 104 00:04:23,879 --> 00:04:20,350 there's one double triple okay i think 105 00:04:26,189 --> 00:04:23,889 there's something here so i looked at 106 00:04:28,350 --> 00:04:26,199 this and and I got a little bit excited 107 00:04:31,230 --> 00:04:28,360 and then I said you know I think I know 108 00:04:33,900 --> 00:04:31,240 what 7.81 reminds me of it it's a 109 00:04:37,020 --> 00:04:33,910 Schumann frequency it's the it's the 110 00:04:39,990 --> 00:04:37,030 frequency of the earth so here it looks 111 00:04:42,779 --> 00:04:40,000 like bill is doing harmonics on the 112 00:04:47,070 --> 00:04:42,789 frequency of Earth that might be 113 00:04:48,750 --> 00:04:47,080 important so so ever since that day 114 00:04:50,010 --> 00:04:48,760 there's it's almost as if there's this 115 00:04:51,450 --> 00:04:50,020 guy named Schumann that's kind of 116 00:04:57,240 --> 00:04:51,460 hanging over my shoulder watching me 117 00:04:59,760 --> 00:04:57,250 work and saying is this about me so I 118 00:05:00,810 --> 00:04:59,770 knew I needed more data oh and and I 119 00:05:02,219 --> 00:05:00,820 didn't really get that excited 120 00:05:03,839 --> 00:05:02,229 intelligent the by spectra because 121 00:05:05,310 --> 00:05:03,849 that's what that's the tool Jay said 122 00:05:06,870 --> 00:05:05,320 well you're going to look at the by 123 00:05:08,629 --> 00:05:06,880 Spector and I didn't know what he had in 124 00:05:10,830 --> 00:05:08,639 mind but this is what he had in mind and 125 00:05:12,540 --> 00:05:10,840 so I wanted to know if those frequencies 126 00:05:15,930 --> 00:05:12,550 were really happening at the same time 127 00:05:19,890 --> 00:05:15,940 is it really like a bell and and here it 128 00:05:22,890 --> 00:05:19,900 is you can see 7.81 15.6 three I think 129 00:05:25,950 --> 00:05:22,900 it's 23.4 for you can see one two three 130 00:05:28,050 --> 00:05:25,960 lines there and then I think then I 131 00:05:30,089 --> 00:05:28,060 started to wonder well are they really 132 00:05:32,730 --> 00:05:30,099 happening in the same place or is this 133 00:05:35,399 --> 00:05:32,740 being reflected from somewhere else so I 134 00:05:37,770 --> 00:05:35,409 map that out and then they are right on 135 00:05:41,189 --> 00:05:37,780 top of each other and the highest 136 00:05:42,689 --> 00:05:41,199 amplitude in the same place so then I'm 137 00:05:44,370 --> 00:05:42,699 really wanting to get back to the data 138 00:05:47,850 --> 00:05:44,380 and I'm going to want to isolate all 139 00:05:50,370 --> 00:05:47,860 those little bits and and get at that 140 00:05:54,089 --> 00:05:50,380 and the software doesn't really allow me 141 00:05:55,890 --> 00:05:54,099 to do that in any sensible way and I 142 00:05:58,260 --> 00:05:55,900 keep banging at it and have them all 143 00:06:01,610 --> 00:05:58,270 kinds of bad ideas and then I start 144 00:06:05,140 --> 00:06:01,620 staring into space on this question and 145 00:06:07,300 --> 00:06:05,150 two days later I come up with an answer 146 00:06:12,820 --> 00:06:07,310 and I realize there's an export button I 147 00:06:14,290 --> 00:06:12,830 can put it into Excel and you know so 148 00:06:18,040 --> 00:06:14,300 what if it's a half a million rows I've 149 00:06:20,560 --> 00:06:18,050 got a newish computer and I can put my 150 00:06:23,620 --> 00:06:20,570 funny little formulas here and ask pz 151 00:06:26,190 --> 00:06:23,630 what kind of how big these waves are and 152 00:06:29,980 --> 00:06:26,200 then assign values in these columns and 153 00:06:32,560 --> 00:06:29,990 then pour that data back into my EEG 154 00:06:34,210 --> 00:06:32,570 software and tell the EEG software that 155 00:06:37,270 --> 00:06:34,220 these are a couple anonymous electrodes 156 00:06:38,800 --> 00:06:37,280 and then on that basis I can select the 157 00:06:42,430 --> 00:06:38,810 data that i want to see here the big 158 00:06:45,460 --> 00:06:42,440 waves are passing through and I can also 159 00:06:47,380 --> 00:06:45,470 do the inverse and see the contrast and 160 00:06:51,160 --> 00:06:47,390 I was pretty excited about myself at 161 00:06:52,540 --> 00:06:51,170 that point and then I look at the data 162 00:06:54,490 --> 00:06:52,550 and sure enough it looks really good 163 00:06:57,190 --> 00:06:54,500 really nice contrast where everything's 164 00:06:59,140 --> 00:06:57,200 great until i realized that it's only 165 00:07:01,660 --> 00:06:59,150 analyzing the really big chunks of data 166 00:07:03,700 --> 00:07:01,670 and its really skipping over most of 167 00:07:07,270 --> 00:07:03,710 most of the sample most of the things 168 00:07:09,100 --> 00:07:07,280 that i want to see so at that point i 169 00:07:15,070 --> 00:07:09,110 stare into space and ask myself a 170 00:07:17,380 --> 00:07:15,080 brand-new question and i come up with an 171 00:07:19,780 --> 00:07:17,390 answer that i was basically almost there 172 00:07:23,800 --> 00:07:19,790 I just needed to do a little bit more 173 00:07:25,630 --> 00:07:23,810 work in Excel and select just the just 174 00:07:28,260 --> 00:07:25,640 the data that I wanted to see or pass in 175 00:07:31,390 --> 00:07:28,270 a zero and from that point I could 176 00:07:34,240 --> 00:07:31,400 create create a file for the EEG that I 177 00:07:35,500 --> 00:07:34,250 could analyze each of these bursts that 178 00:07:38,860 --> 00:07:35,510 comes through individually and 179 00:07:42,640 --> 00:07:38,870 collectively so here I've got 15 of the 180 00:07:45,910 --> 00:07:42,650 most the longest lasting burst let's say 181 00:07:49,180 --> 00:07:45,920 each quarter second was greater than 20 182 00:07:50,920 --> 00:07:49,190 micro volts or something in and so these 183 00:07:52,300 --> 00:07:50,930 15 I took a look at individually and 184 00:07:57,360 --> 00:07:52,310 here we're going to have three views of 185 00:08:00,730 --> 00:07:57,370 all of them so and here's a trade off 186 00:08:02,740 --> 00:08:00,740 the spectral analysis will allow you to 187 00:08:05,650 --> 00:08:02,750 look at one second of data but it will 188 00:08:07,870 --> 00:08:05,660 give you a very poor resolution so I 189 00:08:09,519 --> 00:08:07,880 wanted to know because I've got this 190 00:08:11,529 --> 00:08:09,529 human guy looking over my shoulder I 191 00:08:14,439 --> 00:08:11,539 want to know what that frequency really 192 00:08:16,449 --> 00:08:14,449 is so my trade off is I'm going to have 193 00:08:18,369 --> 00:08:16,459 three seconds of zeros in here to get a 194 00:08:21,279 --> 00:08:18,379 four second analysis to get quarter 195 00:08:23,379 --> 00:08:21,289 second resolution and with that 196 00:08:25,749 --> 00:08:23,389 trade-off is some error so I'm going to 197 00:08:28,479 --> 00:08:25,759 expect some error but i do that knowing 198 00:08:29,949 --> 00:08:28,489 that I've got 15 samples and out of 199 00:08:31,719 --> 00:08:29,959 those at the end I'm going to tell them 200 00:08:34,209 --> 00:08:31,729 up and maybe I'll learn something about 201 00:08:37,860 --> 00:08:34,219 what this frequency is again the 202 00:08:41,379 --> 00:08:37,870 alternative is just always again 7.81 203 00:08:44,650 --> 00:08:41,389 15.6 three so here's one and it comes up 204 00:08:47,470 --> 00:08:44,660 eight point 06 a little higher and this 205 00:08:51,220 --> 00:08:47,480 one has a rounded harmonic and that's 206 00:08:53,980 --> 00:08:51,230 one quarter step quarter hurts away from 207 00:08:55,929 --> 00:08:53,990 a double and given the expected error I 208 00:08:58,749 --> 00:08:55,939 think that is a double and when you look 209 00:09:02,590 --> 00:08:58,759 at the by spectra you can see two nice 210 00:09:07,449 --> 00:09:02,600 lines coming up hey that's the first one 211 00:09:10,840 --> 00:09:07,459 second one is a little bit longer and 212 00:09:14,610 --> 00:09:10,850 again eight point 06 and again nearly on 213 00:09:18,100 --> 00:09:14,620 the double and a nice second line third 214 00:09:24,639 --> 00:09:18,110 one is a seven point eight one and a 215 00:09:25,809 --> 00:09:24,649 nice second line fourth one surprised me 216 00:09:27,819 --> 00:09:25,819 because there's one thing I didn't tell 217 00:09:29,740 --> 00:09:27,829 you about this sample I tried to filter 218 00:09:33,639 --> 00:09:29,750 out anything above 8.3 hurts because 219 00:09:35,259 --> 00:09:33,649 again i had schumann on my mind but but 220 00:09:39,100 --> 00:09:35,269 i tried to filter them out but he was so 221 00:09:41,049 --> 00:09:39,110 strong he came through anyway and he did 222 00:09:45,879 --> 00:09:41,059 have a he does have a little bit of a 223 00:09:48,579 --> 00:09:45,889 second line there this one can't quite 224 00:09:54,429 --> 00:09:48,589 make up his mind on the peak but on the 225 00:09:55,960 --> 00:09:54,439 double it splits the difference and the