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Feb
23
awarded  Enlightened
Feb
23
awarded  Nice Answer
Feb
20
answered What is an auditory upward sweep?
Feb
20
comment What is an auditory upward sweep?
It just means a sound that starts at a low frequency and goes up to higher frequency like a whistle sound. Perhaps someone can give you an example sound file and/or a spectrogram representation of it.
Feb
18
answered Can the human brain be reduced to a binary system?
Feb
18
answered How can action potentials be generated through thoughts?
Feb
16
reviewed Approve What's a non-allelic gene?
Feb
16
reviewed Approve What are the requirements for a stable carbon cycle in sealed “bottle gardens”`?
Feb
16
awarded  Civic Duty
Feb
13
reviewed Approve Maximum RPM in zero-g before losing consciousness, spinning head-over-heels
Feb
13
comment What actually are thoughts?
But what are thoughts? :) I don't think the question is well defined yet. If you indicate a specific "thought" or "thought process" in mind, you may get a better answer.
Feb
6
comment Why aren't circadian rhythms exactly 24 hours long?
Perhaps because the optimal cycle of life is not 24 hours due to seasonal changes and migrations? It is quite difficult to make biological oscillators with very long periods precise, and it doesn't need to be, because one can entrain an oscillator with external stimuli. And as you mentioned in the comments, variations can be helpful in many ways.
Feb
6
awarded  Yearling
Jan
22
revised What is the limit of time resolution in fMRI?
incorporate comment response
Jan
21
reviewed Approve Can humans perceive sounds above 20 kHz?
Jan
21
comment What is the limit of time resolution in fMRI?
I don't think it excels in spatial domain either. Though there has been a recent report about correlations at a single neuron level. See Schulz, K., Sydekum, E., Krueppel, R., Engelbrecht, C. J., Schlegel, F., Schroter, A., Rudin, M., and Helmchen, F. (2012). Simultaneous BOLD fMRI and fiber-optic calcium recording in rat neocortex. Nat Meth, 9(6):597-602. dx.doi.org/10.1038/nmeth.2013
Dec
19
comment What is the science behind the inaccurate perception of colors?
@ChrisStronks pigment depletion can be thought of as a form of adaptation. I guess 'gain control' would be a wrong analogy though. Thanks for your comment and answer.
Dec
19
awarded  Enlightened
Dec
19
awarded  Nice Answer
Dec
18
revised What is the science behind the inaccurate perception of colors?
added 98 characters in body