A 48-year-old woman has a history of schizophreniform disorder that is controlled by daily administration of clozapine. After being transferred to a new facility, the woman is switched from clozapine to risperidone and subsequently develops frequent and forceful blinking of her eyelids. When the condition is exacerbated by light, the woman blinks her eyes nearly 40 times in one minute. An ophthalmological consultation was unremarkable for any eye pathology contributing to this presentation and the neurological examination did not reveal any other abnormal movements. Which of the following most specifically describes the motor symptoms experienced by this woman?