Final answer:
Hyperreflexia is a symptom of upper motor neuron damage that causes random uncontrolled contractions of different muscle groups as a result of damage to the basal nuclei.
Step-by-step explanation:
The random uncontrolled contractions of different muscle groups as a result of damage to the basal nuclei is a symptom of upper motor neuron damage called hyperreflexia. The basal nuclei, also known as basal ganglia, are a group of structures in the brain involved in motor control. Damage to the basal nuclei can disrupt the normal regulation of muscle movement by the upper motor neurons, leading to excessive contractions and hyperreflexia.