> When writers say that the cortex is only 6 layers deep, do they mean it's
> simply 6 neurons deep or 6 layers that are thicker than 1 neuron?
They mean six layers that are thicker than one neuron. For details, see
Corticonics (1991) by M Abeles or Anatomy of the Cortex (1991) by Braitenberg
and Schuez.
John
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John E Anderson
Department of Natural Sciences
University of North Florida
Jacksonville FL