Table 1.

Mean Values ± SD of Neurochemical Variables

	Auditory	MPFC
Glx/NAAtot	0.587 ± 0.096	0.684 ± 0.088
GABA/NAAtot	0.269 ± 0.036	0.339 ± 0.040
CSF	0.115 ± 0.037	0.106 ± 0.035
GM/WM	1.1632 ± 0.352	1.744 ± 0.229
PLE (β)	1.027 ± 0.188	1.431 ± 0.233
SD (σ)	0.390 ± 0.078	0.503 ± 0.009

Note: MPFC, medial prefrontal cortex; CSF, cerebral spinal fluid; GM/WM, grey matter to white matter; PLE, power law exponent.