Fig. 3From: Corticospinal excitability in idiopathic normal pressure hydrocephalus: a transcranial magnetic stimulation studyInput–output curves before and after lumbar puncture with cerebrospinal fluid (CSF) drainage. The slope of the input–output curve steepened in the TT+ subgroup after CSF drainage. *Significant difference, p = 0.028, Wilcoxon signed-rank test. MEP motor evoked potential, MSO maximum stimulator output. Pre-LP before lumbar puncture, Post-LP after lumbar puncture, TT+ patients who improved at least 10% in the TAP test, TT− patients who improved under 10% in the TAP testBack to article page