The coil orientation dependency of the electric field induced by TMS for M1 and other brain areas

Table 1 Cortical target locations

Cortical location	Current direction in brain for ‘standard’ orientation	Code
M1 right hemisphere	experimentally determined (highest MEP amplitude)	MR
Lateral cerebellum left [8,40]	rostral (upwards)	CL
Medial cerebellum [8,40]	rostral (upwards)	CM
Lateral cerebellum right [8,40]	rostral (upwards)	CR
O1 (occipital lobe left hemisphere) [9]	medial-lateral	OL
Oz (medial occipital lobe) [9]	medial-lateral leftwards	OM
O2 (occipital lobe right hemisphere) [9]	medial-lateral	OR
Dorsolateral premotor cortex left hemisphere [7,41]	antero-medial	PML
Dorsolateral premotor cortex right hemisphere [7,41]	antero-medial	PMR
Dorsolateral prefrontal cortex left hemisphere [5] (visual)	antero-medial	PFL
Dorsolateral prefrontal cortex right hemisphere [5] (visual)	antero-medial	PFR
Supplementary motor area 30 mm anterior to Cz [6,25]	medial-lateral leftwards	SM1
Supplementary motor area 50 mm anterior to Cz [7,25]	medial-lateral leftwards	SM2
Inferior frontal gyrus [10] (visual)	antero-medial	IL

The cortical target locations commonly used in clinical and cognitive studies, based on neuronavigational data and visual inspection of the model (as indicated). The stimulation locations are based on studies indicated by the references. All cortical target locations are situated in the sulcal wall.

ISSN: 1743-0003