哪些神经科学新发现即将改变世界
最新书摘：
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[已注销]2015-02-26The coherent firing patterns of simultaneously recorded grid cells suggested that the same grid map was used over and over again, pointing to the grid cells -- and not the place cells -- as a likely implementation of a universal brain metric for space.What is most striking about the modular organisation of the grid cells is that individual modules can respond quite independently to change in the spatial layout of the environment.
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[已注销]2015-02-19Rather, biological organisms may be very effective at performing certain computations because they have evolved a highly specialised set of finely optimised algorithms for solving them, a "bag of tricks". There "tricks" may deal with the many special cases and exceptions needed to render the algorithms effective over a wide range of real-world scenarios. This view is anathema to theorists in search of a small set of unifying principals to explain biological computation. But perhaps it is sensible when one considers that organisms have been subjected to several hundred million years of selective pressure to evolve an effective bag of tricks. The brain might be what Gary Marcus has called a "kluge", a clumsy and inelegant solution that gets the job done, without necessarily being beautiful.
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[已注销]2015-02-18Finally, perturbing the dynamical system rather than just observing it is another necessary ingredient for understanding it. Can we build conceptual and predictive models for how the brain works, then make a prediction of what it would do when a set ot neurons suddenly falls still?
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[已注销]2015-02-18This transcriptional atlas of six adult human brains contains extensive histological analysis and comprehensive microarray profiling of several hundred precise brain subdivisions......Interestingly, the neocortex displays a relatively homogeneous transcriptional pattern but with distinct features associated selectively with primary sensorimotor cortices and with enriched frontal lobe expression.