Since K cells are a heterogeneous group of cells, it is likely that they contain subclasses which fulfill different functions. Some cells respond to colour, some to achromatic gratings and still others are unresponsive to any types of gratings. Experimental results suggest that K cells could contribute to aspects of spatial and temporal vision, but it is unclear exactly how. Some hypotheses are: * K cells contribute to brightness contrast information and colour contrast in species with colour vision * K cells contribute to eye movement-related signals by directly projecting to the dorsomedial visual area (DM, V6) which is a motion-related area * K cells are part of a neuromodulatory pathway by projection to the most superficial layer of V1, layer I
Koniocellular cell
Pseudounipolar neuron
Magnocellular neurosecretory cell
Martinotti cell
Anitschkow cell
Granule cell
Aschoff cell
Neurosphere