Table 3.

Summary of studies which include patients with motor conversion symptoms

Study	Comparison	Control Group	N	Imaging Modality	Areas of increased activation in clinical group	Areas of decreased activation in clinical group	Notes
(126)	Attempted movement vs. rest	None	1	PET	Increased activity in ACC (BA 24/32) and OFC (BA 10)		No statistical analyses performed. Authors note an absence of motor cortex activity
(127)	Resting	None	5	SPECT		Left Temporal and Parietal regions	No statistical analyses performed
(128)	Attempted movement vs. rest	Healthy controls who feigned weakness	2	PET		Left dlPFC (BA 46)	Qualitative between group comparison
(129)	Movement vs. rest and observation of moving hand vs. observation of resting hand	Healthy controls who moved limbs normally	4	fMRI		Motor cortex during movement observation (BA 4)	No differences observed during movement itself. Qualitative comparison between groups
(130)	Attempted movement vs. rest	Healthy controls who feigned weakness	4	fMRI	Frontal (BA 47), striatal and lingual cortex (BA 18)	Motor (BA 4) and OFC (BA 10/46)	Qualitative comparison between groups
(131, 132)	Mental rotation of affected vs. unaffected hand	Within subject analysis— unaffected side acts as control	8	fMRI	Medial frontal (BA 9/11) and superior temporal cortex (BA 22)		Non-parametric statistical analysis performed within subjects
(133)	Go NoGo Task	Healthy controls who feigned weakness	1	fMRI	Ventromedial frontal (BA32/10) and left orbital frontal (BA 47)		Qualitative comparison between groups. Effects reported during movement preparation