Table 1.

Methods of Study in Auditory Neuroscience.

Method	Response Mechanism	Temporal Res.	Spatial Res.
EEG	Electrical potentials measured by multiple surface electrodes	< 1 ms	8 – 14 mm (dep # channels)
MEG	Electrical currents measured by superconducting coils	< 1 ms	8 – 14 mm (dep # channels)
PET	Cerebral metabolic changes measured by radioactive tracers	> 2 min	6 – 10 mm
fMRI	Cerebral metabolic changes measured by changes in magnetic properties depending on blood oxygen levels	0.25 – 3 sec	3 – 5 mm (1.5T) 2 mm (3T) < 1 mm (7T)