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Table 2 Candidate physiological biomarkers for ALS

From: New developments and future opportunities in biomarkers for amyotrophic lateral sclerosis

  Evaluated biomarkers
Measures of LMN loss Motor unit number estimation (MUNE)
  Axonal excitability
  Electrical impedance myography (EIM)
  Muscle ultrasound (MUS)
Measures of UMN loss Transcranial magnetic stimulation (TMS)