Treatment of cranial dysfunctions using novel cyclic amino acids

A method of treating certain forms of epilepsy, faintness attacks, hypokinesia and cranial traumas which comprises the enteral or parenteral administration to a mammal having such cranial dysfunction of an amount effective for such treatment of at least one compound or its pharmaceutically acceptable salt of the formula:

• ##STR6## wherein R is hydrogen or a lower alkyl and n is 4, 5, or 6.