Laura Dalla Vecchia

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We studied the autonomic response to an orthostatic challenge (i.e. head-up tilt) in 52 amyotrophic lateral sclerosis (ALS) patients and 16 healthy subjects by means of power spectral analysis of heart period (HP) and systolic arterial pressure (SAP) variability. In addition, we verified the correlation of spectral indexes with clinical features of the ALS(More)
The study evaluates the k-nearest-neighbor (KNN) strategy for the assessment of complexity of the cardiac neural control from spontaneous fluctuations of heart period (HP). Two different procedures were assessed: i) the KNN estimation of the conditional entropy (CE) proposed by Porta et al; ii) the KNN estimation of mutual information proposed by(More)
The beat-by-beat variability of heart period (RR), systolic arterial pressure (SAP), diastolic arterial pressure (DAP) and skin microvascular conductance (G) in the palmar region of 23 healthy volunteers were analyzed during rest (R), clinostatic exercise at 10% maximum level (EXE1), 20% (EXE2) 30% (EXE3) and recovery (REC). G was obtained as the ratio(More)
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