Scientists have long known that the brain's visual system isn't fully hardwired from the start-it becomes refined by what ...

The neuron theory There was, however, a tissue that seemed to belie cell theory — nervous tissue. Because of its softness and fragility, it was difficult to handle and susceptible to deterioration.

Technology Feature Published: October 2009 Getting inside their minds Michael Eisenstein Nature Methods 6, 773–781 (2009) Cite this article ...