(Adapted from Fiala and Harris, 1999.)
Adendritic |
Cell body lacks dendrites | Dorsal root ganglion cells Sympathetic ganglion cells |
Spindle radiation |
Two dendrites emerge from opposite poles of the cell body and have few branches | Lugaro cells Bipolar cells of cortex |
Spherical radiation: Stellate |
Dendrites radiate in all directions from cell body | Spinal neurons Cerebellar granule cells Neurons of subcortical nuclei (e.g. inferior olive, pons, thalamus, striatum) |
Spherical radiation: Partial |
Dendrites radiate from cell body in directions restricted to a part of a sphere | Neurons at edges of "closed" nuclei (e.g. Clarke's column, inferior olive, vestibular nuclei) |
Laminar radiation: Planar |
Dendrites radiate from cell body in all directions within a thin domain | Retinal horizontal cells |
Laminar radiation: Offset |
Plane of radial dendrites offset from cell body by one or more stems | Retinal ganglion cells |
Laminar radiation: Multi |
Cell has multiple layers of radial dendrites | Retinal amacrine cells |
Cylindrical radiation |
Dendrites ramify from a central soma or dendrite in a thick cylindrical (disk-shaped) domain | Pallidal neurons Reticular neurons |
Conical radiation |
Dendrites radiate from cell body or apical stem within a cone or paraboloid | Granule cells of dentate gyrus and olfactory bulb Primary dendrites of mitral cells of olfactory bulb Semilunar cells of piriform cortex |
Biconical radiation |
Dendrites radiate in opposite directions from the cell body | Bitufted, double bouquet, and pyramidal cells of cerebral cortex Vertical cells of superior colliculus |
Fan radiation |
One or a few dendrites radiate from cell body in a flat fan shape | Cerebellar Purkinje cells |