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revised How many action potentials from presynaptic neurons would be required to make a postsynaptic neuron fire?
added reference
May
16
awarded  Necromancer
May
16
awarded  Revival
May
15
awarded  Revival
May
15
awarded  Yearling
May
15
awarded  Vox Populi
May
15
answered How does the alpha brain wave frequency range distribute over the population?
May
15
comment Can exceptional creativity be learnt
it's because the terms you are using are incredibly poorly defined, so the question is very vague
May
15
comment Can exceptional creativity be learnt
ok well insight can certainly be learned. insight very often comes from experience.
May
15
comment Can exceptional creativity be learnt
well natural ability can refer to athletic ability and surely that is not what people mean
May
15
comment Can exceptional creativity be learnt
What do you mean by creativity? Why do you say that genius is natural ability?
May
15
comment Are the center surround receptive fields learnt or inherited?
However, these observations of vision-dependent dendritic plasticity in the retina underscore the need to consider the developmental effects of sensory stimulation at all levels of the visual pathway and raise the possibility that some physiological changes in the cortex may be due to alterations of retinal circuitry.
May
15
comment Are the center surround receptive fields learnt or inherited?
Visual stimulation therefore acts in various ways to shape the dendritic organization and light responses of the retinal ganglion cells. It is not yet apparent why maturing retinal circuits should be fine tuned by visual stimulation, but this plasticity may represent a strategy by which the animal can adapt to novel visual environments if the need arises.
May
15
comment Are the center surround receptive fields learnt or inherited?
The effect of visual deprivation was attributed to the maintenance of a greater proportion of bistratified cells in the mouse retina. Because retinal ganglion cell numbers are largely unchanged after eye opening, the increased bistratified cell population is thought to arise from a failure to eliminate dendrites in the ON or OFF synaptic sublamina. The anatomical perturbation by light deprivation is supported by physiological recordings showing a similar increase in the incidence of ON-OFF retinal ganglion cells in dark-reared animals.
May
15
comment Are the center surround receptive fields learnt or inherited?
Surprisingly, visual deprivation also induces significant changes in dendritic branching patterns in the retina. In the turtle retina, dark rearing results in an expanded dendritic territory in retinal ganglion cells (Sernagor and Grzywacz, 1996). Recently, visual deprivation in mice showed that there are more bistratified retinal ganglion cells in dark-reared compared to light-reared animals (Tian and Copenhagen, 2003). Bistratified cells respond to both an onset (ON) and offset (OFF) of light, in contrast to monostratified cells that are either ON or OFF responsive (Wässle, 2004).
May
15
comment Are the center surround receptive fields learnt or inherited?
how about this article sciencedirect.com/science/article/pii/S0896627305008779
May
15
comment Are the center surround receptive fields learnt or inherited?
my bad. i was mostly trying to point in the right direction of search terms. "plasticity" instead of "learning"
May
15
comment How is brain processing different for situation-less emotional faces vs. situated emotional faces?
it is unlikely to find an answer to such a specific question. you'd have more luck looking into the brain level of analysis for the broader question of context-dependent visual processing.
May
15
answered Are the center surround receptive fields learnt or inherited?
May
15
awarded  Excavator