Recent imaging studies have shown activation or stimulation of the hypothalamus during a cluster attack.

It often shows increased activation in depressed people, and drugs that reduce its activity are sometimes effective in reducing symptoms.

Synesthetes, the researchers found, showed increased activation in some areas of the visual cortex when responding to sounds; control subjects did not.

When sleep-deprived, subjects showed increased activation in the left intraparietal sulcus.

The following is a list of the specific structures that show increased activation during a tip of the tongue state:

Additionally, the medial cerebellum has shown activation only during eye movements.

Both conditions showed activation in the dorsal and parietal premotor areas.

Interestingly, people who say they are vivid imagers show stronger activation of the relevant areas in the brain, she said.

Children with autism, however, only show activation in these areas when recognizing their own faces.

Children have decreased specificity in skills than adults, so they show greater activation during spatial tasks.