It is the aim of science to establish general rules which determine the reciprocal connection of objects and events in time and space.

The temporal lobe, which holds the hippocampus, entorhinal, perirhinal and parahippocampal cortices, has a reciprocal connection with the neocortex.

One study on rhesus monkeys revealed widespread reciprocal connections between the insular cortex and almost all subnuclei of the amygdaloid complex.

Sensory cortices additionally share highly complex reciprocal connections with the orbitofrontal cortex.

The orbitofrontal cortex additionally shares extensive reciprocal connections with the amygdala, and direct and indirect connections to the hypothalamus.

Memory has been shown to influence decision making behavior and, considering the reciprocal connection between the two, affect can as well.

Further studies suggest that the neuronal modifications involved in addiction follow a dorsally cascading sequence of reciprocal connections between the two aforementioned areas.

Strong reciprocal connections link the subthalamic nucleus and the external segment of the globus pallidus.

Thalamic nuclei have strong reciprocal connections with the cerebral cortex, forming thalamo-cortico-thalamic circuits that are believed to be involved with consciousness.

In rats and cats, a very large reciprocal connection exists between the entorhinal cortex and the olfactory system.