 They are prominent in the sensory cortical areas because of high densities of thalamocortical fiber terminations.The outer band of Baillarger is especially prominent in the visual cortex, and is sometimes referred to as the band of Gennari.In the field of psychiatry, Baillarger did research on the involuntary nature of hallucinations and the dynamics of the hypnagogic state (the intermediary stage between sleep and wakefulness).