• Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint
Share this Page URL
Help

2. Seeing: Hacks 13–33 > 33. Neural Noise Isn’t a Bug; It’s a Feature

Neural Noise Isn’t a Bug; It’s a Feature

Neural signals are innately noisy, which might just be a good thing.

Neural signals are always noisy: the timings of when they fire, or even whether they fire at all, is subject to random variation. We make generalizations at the psychological level, such as saying that the speed of response is related to intensity by a certain formula—Pieron’s Law [Why People Don’t Work Like Elevator Buttons]. And we also say that cells in the visual cortex respond to different specific motions [See Movement When All Is Still]. But both of these are true only on average. For any single cell, or any single test of reaction time, there is variation each time it is measured. Not all the cells in the motion-sensitive parts of the visual cortex will respond to motion, and those that do won’t do it exactly the same each time we experience a particular movement.


PREVIEW

                                                                          

Not a subscriber?

Start A Free Trial


  
  • Creative Edge
  • Create BookmarkCreate Bookmark
  • Create Note or TagCreate Note or Tag
  • PrintPrint