These are: extrinsic outputs, excitatory and inhibitory intrinsic connectivity, and intrinsic inputs.
The authors of this manuscript present an interesting analysis of the intrinsic input-output properties of adult born neurons across at various developmental stages.
They can be considered as intrinsic inputs and again the system can be modelled by a non-autonomous ODE.
The same layer VI cells that project to the rat anterior thalamus also receive intrinsic inputs from layer II (Amin et al., 2010), while layer VI also gives rise to intrinsic projections within retrosplenial cortex (Sripanidkulchai & Wyss, 1987) as well as projections to the anterior cingulate cortex and superior colliculus (Van Groen & Wyss, 1990, 2003).
We distinguish between 3 types of inputs to the local cortical network: Thalamic afferents, "gray matter" external inputs, that is, intrinsic nonlocal inputs entering the local network through the gray matter, and other "white matter" external inputs, which include all inputs not covered by the previous types.
In the snail Helix aspersa tentacle withdrawal reflex, for instance, mixed intrinsic-extrinsic sensitization may be induced by a strong intrinsic stimulus when combined with inputs from the CNS [ 27, 49].
We explain why the resonance phenomena do not necessarily arise from the presence of imaginary eigenvalues at rest, but rather they emerge from the interplay of the intrinsic and input time scales.
Generally, it seems the more proximal or intrinsic the input, the greater the inhibitory impact.
The albumen gland and its secretory duct also receive intrinsic nervous input derived from neurons in the carrefour region.
