The low frequency cerebral blood flow velocity (CBFV) oscillations in neonates are commonly attributed to an underdampened immature linear type cerebral autoregulation, and the 'instability' is regarded as causative for peri-intraventricular haemorrhage/periventricular leukomalacia. In In general, oscillations of non-linear systems do not reflect underdampening of the system as they do in linear systems, and thus by no means are an a priori sign of instability.
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