Table 1.

Mean and SD olfactory threshold levels for study timepoints and stimulation conditions.

Odorant	Time	Sham TNS		Active TNS		Active tDCS
		Mean	SD	Mean	SD	Mean	SD
PEA	Baseline	−6.6063	1.695	−6.3625	1.529	−6.575	1.68
	Post-Stim	−7.575	1.116	−6.4125	2.215	−7.1875	1.738
	30min Post-Stim	−6.7063	1.465	−6.375	1.981	−6.8375	1.891
GUA	Baseline	−6.643	1.309	−6.056	1.262	−6.2563	0.785
	Post-Stim	−6.681	1.285	−6.806	1.607	−6.975	1.208
	30min Post-Stim	−5.943	0.844	−6.462	1.278	−7.0875	1.29