Chronic action of gravity force of 2 G on pre- and postnatal rats up to day 75 of postnatal development gave rise to ultrastructural deviations in the somatosensory cortex (SSC) suggesting higher afferentation to SSC as compared with their counterparts at 1 g, more intensive synaptic transmission, afferent input by dendrites and neurons functioning with more frequent interneuronic contacts, glia activation and increased blood supply that altogether pointed to a permanent impact of elevated extero- and proprioceptive input throughout the time of SSC formation.
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