Developmental EEG correlates of sleep and wakefulness in rats
Short myoclonic twitches of limbs or entire body generate primary sensory cortex activation in neonatal rats contributing development of somatosensory system. Similar spontaneous muscle twitches observed also in whiskers system. Spontaneous whisker movements and patterns of cortical activity occuring during sleep well studied. However, it remains unknown how whisker movement activity organized in wake state and how it correlates with neuronal activity in primary somatosensory cortex during first postnatal week, when basic movement pattern of whiskers (whisking) has not been formed. During wake periods we observed slow oscillatory whisker movements in 2-5 Hz frequency called protowhisking. During each episode of wake movements we observed raising activity in somatosensory cortex in form of increased action potential frequency and spectral characteristics of local field potential.