Which of the following is NOT a symptom commonly associated with basal ganglia lesions?

Basal ganglia lesions are typically associated with a range of movement disorders due to their role in regulating voluntary movements. Symptoms such as bradykinesia, hemiballismus, and asthenia are indeed commonly linked to dysfunction within the basal ganglia.

Bradykinesia refers to slowness of movement, a hallmark of conditions like Parkinson's disease, which involves basal ganglia pathology. Hemiballismus is characterized by wild, flinging movements and arises from damage to the subthalamic nucleus within the basal ganglia. Asthenia, reflecting a general muscular weakness or lack of energy, can also be associated with basal ganglia disorders.

In contrast, an intentional tremor is more specifically related to cerebellar dysfunction rather than basal ganglia lesions. This type of tremor occurs during voluntary movements and is associated with conditions that affect the cerebellum, emphasizing the distinction between the roles of these brain structures in movement control. Thus, intentional tremor stands out as the symptom not typically associated with basal ganglia lesions, making it the correct answer in this context.