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 Yearling
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Feb
26
revised How far can a signal travel in the neocortex without passing through the white matter?
corrected info about layer I
Feb
26
comment How far can a signal travel in the neocortex without passing through the white matter?
(for borilla and @mcb) Thank you for your comments, which led me to re-research this area and correct some misconceptions I had. I will heavily edit the second paragraph as soon as I can.
Feb
22
awarded  Yearling
Feb
12
comment Where is neuroplasticity limited in the brain?
The term "critical period" implies that regional plasticity ends thereafter. For instance, the critical period for ocular dominance to develop in primary visual cortex makes me wonder if plasticity in all or part of primary visual cortex ends after that critical period.
Feb
12
answered How far can a signal travel in the neocortex without passing through the white matter?
Jan
29
comment How are positions and counts of higher concepts encoded in sparse representations?
I'd expect the "face" neuron to fire if you were thinking of the appearance of a face, whether you could actually see it or not. But, I think you are wondering if the "face" neuron can fire when a face is detected only in periphery vision (and there were no other clues such as a voice or an attached body that would evoke "face"). I guess it would depend on degree of eccentricity of gaze, whether that part of the periphery has high enough resolution, and whether you have enough experience recognizing faces in that part of your periphery.
Jan
28
comment How are positions and counts of higher concepts encoded in sparse representations?
Your title seems to be missing some words: "How are positions and counts of higher _____ _____ encoded in sparse representations?" I've also read the description of your question, and, unfortunately, I cannot answer it. However, I'd suggest that representations are always distributed, so the position information may be at a lower level than the identity representation. Counting visual objects, on the other hand, requires an eye-motion algorithm (except in the case of the acquired skill of subitizing) based partly on the skill of pure, abstract counting. Where's the result stored?
Jan
28
comment Reciting Reverse Order Alphabet vs Reverse Order Counting
The sequences that are easy for you are easy because you've learned them already. Several points: A child who has just learned to count cannot count backwards because the child hasn't learned how yet. If you practice the alphabet backwards, you will learn it well. Unlike alphabets, number sequences can alternatively be learned by algorithm; so you can easily count down from 78,000 even if you've never done it before -- assuming you've learned the algorithm.
May
26
awarded  Nice Question
Apr
18
awarded  Nice Question
Feb
22
awarded  Yearling
Dec
10
reviewed Approve Are there any rules about masking?
Dec
4
comment Perceptual flicker when rotating my face
See cogsci.stackexchange.com/questions/8716/…
Nov
23
reviewed Approve Is there a correlation or cause-effect relationship between attractiveness and feet?
Nov
23
reviewed Approve How do the correlations between Big 5 personality change in studies examining “faking bad”?
Oct
19
reviewed Approve Name for compulsive need to mimic another's symptoms of illness?
Oct
17
reviewed Approve What makes someone attractive psychologically?
Oct
13
comment Brain after (electrical) blackout
see cogsci.stackexchange.com/a/1954/421
Sep
15
awarded  Custodian
Sep
15
reviewed Approve How to compute auditory steady state responses?