[HN Gopher] Brain wave signals during sleep show how risk-seekin...
___________________________________________________________________
Brain wave signals during sleep show how risk-seeking people may be
Author : rajnathani
Score : 16 points
Date : 2022-03-30 10:45 UTC (1 days ago)
(HTM) web link (medicalxpress.com)
(TXT) w3m dump (medicalxpress.com)
| ninesnines wrote:
| I have some serious doubts about the conclusions of this paper -
| if think studies like this are extremely dangerous to the field
| in general.
| arisAlexis wrote:
| You can correlate those brain waves with anything really:
| predisposed to eat oranges to climb hills, likes color blue. Even
| infinitely small p won't save those studies.
| marcosdumay wrote:
| How many constellations can you find on the data points?
|
| Running a linear correlation over them must be a practical
| joke.
| FranchuFranchu wrote:
| I'm not knowledgeable about statistics and studies like this in
| general; do you mean this is a "green jelly beans cause acne"
| [1] situation, where you test for many hypotheses and one of
| them turns out to be significant?
|
| [1]: https://xkcd.com/882/
| yodon wrote:
| The graph in the summary showing "SWA in the right PFC" is almost
| comically unconvincing.
|
| Remove the two or three most extreme data points and the effect
| disappears completely. Even removing a single one of those
| extreme data points is probably enough to toss the significance
| of the fit and be fully consistent with zero correlation.
| misnome wrote:
| But it says p=0.004 so it must be a good result!!!!!
| gus_massa wrote:
| The full article has 5 of these graphs. I'm staring at them and
| I still can't believe the tiny p values. Is the data of the
| graph available? Can someone repeat those graphs and explain
| the small p values?
|
| [My guess is that the slope is caused by the cluster at
| (SWA=150%, Risk=2m) in the graph.]
___________________________________________________________________
(page generated 2022-03-31 23:01 UTC)