The hippocampus is one of the first brain areas to be affected by Alzheimer's disease, causing problems with memory and spatial orientation.
The Pormpuraawans not only knew that already, but they also spontaneously used this spatial orientation to construct their representations of time.
Next came regions governing spatial orientation and language in the parietal lobes on the sides of the brain.
The unconscious perception of movement and spatial orientation arising from stimuli within the body itself.