Vertical bias in dendritic trees of non-pyramidal neocortical neurons expressing GAD67-GFP in vitro.

The neocortical neuropil has a strong vertical (orthogonal to pia) orientation, constraining the intracortical flow of information and forming the basis for the functional parcellation of the cortex into semi-independent vertical columns or 'modules'. Apical dendrites of excitatory pyramidal neurons are a major component of this vertical neuropil, but the… CONTINUE READING