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Feb
17
comment Natural examples of XOR functions at the cellular level
@WYSIWYG Keep in mind, that a clock/counter is not that great an analogy, since we want the circuit to combine several different input wires/signals and not just track one.
Feb
17
comment Natural examples of XOR functions at the cellular level
@WYSIWYG what are the empirical examples you have in mind? Are they still from synthetic biology? Right now I am following some leads by looking at mechanisms of co-inhibition in T cells, but my lack of knowledge (and other commitments) are making my progress slow. I am not sure if we have to look for binary adders, necessarily. That is just a particular way of thinking about it. However, if we want to go the adders route then base doesn't matter, any prime will work, so an application could be time/season/period tracking.
Feb
17
comment Does this equation have a typo? (Systems Biology, singular value decomposition)
(a) this question has nothing to do with biology (although the paper obviously does, no biology is featured in the question) and (b) yes, it is a typo, as you can tell from it being $x_m$ and not $x_r$ and also as you can tell from equation 6 properly having $v_{k,n}$.
Feb
16
awarded  Announcer
Feb
16
awarded  Custodian
Feb
16
reviewed Approve What would happen if you combined the world's deadliest diseases & viruses?
Feb
15
awarded  Announcer
Feb
15
revised Natural examples of XOR functions at the cellular level
added a link and fixed up some references.
Feb
15
comment Does neuroeconomics study the brain or study economics?
You should consider asking this question on the cognitive sciences stackexchange, which specializes in neuroscience and related fields.
Feb
15
comment Evolution, self organization and neuroscience
I recommend looking at Hoffman's interface theory of perception to help you explore some of the assumptions you are implicitly making in your question. Also, just because a fitness peak exists, doesn't mean you'll get there (for any reasonable notion of getting there).
Feb
15
awarded  Nice Question
Feb
14
comment Natural examples of XOR functions at the cellular level
@JonathanVanMatre thank you, that's an interesting paper. Although it seems like they are implementing XOR through several cells working together with NOR gates as primitives. I will take a look at it, maybe they discuss some natural counterparts. All the synthetic examples suggest that it isn't unreasonable to expect a natural one, I think.
Feb
14
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Feb
14
asked Natural examples of XOR functions at the cellular level
Feb
14
awarded  Yearling
Jan
31
answered The Assumption of Weak Selection?
Jan
9
comment When does weak selection produce qualitatively different results from strong selection?
@fileunderwater thanks, I found that paper shortly after I asked the question and it is extremely relevant, I've been meaning to give a self-answer based on it but have been too busy with other things.
Jan
9
awarded  Popular Question
Dec
30
comment What does fitness really mean?
"As I said I don't want to talk practical issues but theoretical ones, therefore we will assume to work on a panmictic population of inifinite size evenly distributed into class age." infinite versus finite population is not a practical concern, but a very important theoretical distinction in particular if you have stochastic events.
Dec
29
answered Book recommendations for algorithms used in evolutionary biology