Which test is considered the most appropriate for determining cerebral dominance?

The test deemed most appropriate for determining cerebral dominance is the intracarotid sodium amytal test, commonly known as the WADA test. This procedure involves the injection of sodium amytal into one of the carotid arteries, which temporarily anesthetizes the corresponding hemisphere of the brain. By doing so, clinicians can assess the impact on language and memory functions, allowing them to determine which hemisphere is dominant for these cognitive tasks. Typically, for the majority of individuals, the left hemisphere is dominant for language function.

In contrast, the other tests listed do not directly assess cerebral dominance in the same targeted way. Electroencephalography (EEG) monitors electrical activity in the brain but does not provide clear indications of functional dominance related to specific cognitive tasks. Computerized axial tomography (CAT) offers structural images of the brain and can identify physical abnormalities, but it does not inform functional lateralization. Evoked potentials measure the brain's electrical activity in response to stimuli, but again, these do not specifically pinpoint cerebral dominance for cognitive functions.

Therefore, the WADA test stands out as the most effective means of assessing which hemisphere of the brain is dominant for specific cognitive functions, especially for language, making it the correct choice in this context.