References
- Ramirez C, Piemonte ME, Callegaro D, Da Silva HC. Fatigue in amyotrophic lateral sclerosis: frequency and associated factors. Amyotroph Lateral Scler. 2008;9:75–80.
- Magnus T, Beck M, Giess R, Puls I, Naumann M, Toyka KV. Disease progression in amyotrophic lateral sclerosis: predictors of survival. Muscle Nerve. 2002;25:709–14.
- Baltadzhieva R, Gurevich T, Korczyn AD. Autonomic impairment in amyotrophic lateral sclerosis. Curr Opin Neurol. 2005;18:487–93.
- Shimizu T, Hayashi H, Kato S, Hayashi M, Tanabe H, Oda M. Circulatory collapse and sudden death in respirator-dependent amyotrophic lateral sclerosis. J Neurol Sci. 1994; 124:45–55.
- Murata Y, Harada T, Ishizaki F, Izumi Y, Nakamura S. An abnormal relationship between blood pressure and pulse rate in amyotrophic lateral sclerosis. Acta Neurol Scand. 1997;96:118–22.
- Murata Y, Harada T, Ishizaki F, Izumi Y, Nakamura S. Autonomic dysfunction in Parkinson's disease and vascular Parkinsonism. Acta Neurol Scand. 1997;96:359–65.
- Asai H, Hirano M, Udaka F, Shimada K, Oda M, Kubori T, . Sympathetic disturbances increase risk of sudden cardiac arrest in sporadic ALS. J Neurol Sci. 2007;254:78–83.
- Giess R, Werner E, Beck M, Reiners C, Toyka KV, Naumann M. Impaired salivary gland function reveals autonomic dysfunction in amyotrophic lateral sclerosis. J Neurol. 2002;249:1246–9.
- Beaulieu DA, Erickson L, Williams A, Sufit RL, Brooks BR. Intravenous thyrotropin releasing hormone in amyotrophic lateral sclerosis: autonomic effects. Neurol Clin. 1987;5: 269–90.
- Brooks BR, Miller RG, Swash M, Munsat TL; World Federation of Neurology Research Group on Motor Neuron Diseases. El Escorial revisited: revised criteria for the diagnosis of amyotrophic lateral sclerosis. Amyotroph Lateral Scler Other Motor Neuron Disord. 2000;1:293–9.
- Kollewe K, Mauss U, Krampfl K, Petri S, Dengler R, Mohammadi B. ALSFRS-R score and its ratio: a useful predictor for ALS progression. J Neurol Sci. 2008;275:69–73.
- Nogues MA, Stalberg EV. Autonomic analysis of heart rate variation: II. Findings in patients attending an EMG laboratory. Muscle & Nerve. 1989;12:1001–8.
- Malliani A, Pagani M, Lombardi F, Cerutti S. Cardiovascular neural regulation explored in the frequency domain. Circulation. 1991;84:482–92.
- Montano N, Ruscone TG, Porta A, Lombardi F, Pagani M, Malliani A. Power spectrum analysis of heart rate variability to assess the changes in sympathovagal balance during graded orthostatic tilt. Circulation. 1994;90:1826–31.
- Baselli G, Cerutti S, Civardi S, Lombardi F, Malliani A, Merri M, . Heart rate variability signal processing: a quantitative approach as an aid to diagnosis in cardiovascular pathologies. Int J Biomed Comput. 1987;20:51–70.
- Pavlovic S, Stevic Z, Milovanovic B, Milicic B, Rakocevic-Stojanovic V, Lavrnic D, Apostolski S. Impairment of cardiac autonomic control in patients with amyotrophic lateral sclerosis. Amyotroph Lateral Scler. 2010;11:272–6.
- Pisano F, Miscio G, Mazzuero G, Lanfranchi P, Colombo R, Pinelli P. Decreased heart rate variability in amyotrophic lateral sclerosis. Muscle Nerve. 1995;18:1225–31.
- Shields RW Jr. Functional anatomy of the autonomic nervous system. J Clin Neurophysiol. 1993;10:2–13.
- Standish A, Enquist LW, Schwaber JS. Innervation of the heart and its central medullary origin defined by viral tracing. Science. 1994;263:232–4.
- Eckberg DL. Sympathovagal balance: a critical appraisal. Circulation. 1997;96:3224–32.