Dyskinesia is an umbrella term encompassing a range of different movements. These are all movements that can be out of your control. Dyskinesia is very common in cerebral palsy.
Exploration for an infant means discovering anything about that environment. If that infant needs an opportunity to be brought to them, that's okay. Let an infant explore through their senses, whether it's touch, or smell, or taste, or sight, or hearing.
Cerebral palsy is a damage to the developing brain in the motor part of the brain. Individuals with cerebral palsy have problems with weakness and sometimes also involuntary movements.