What technique is primarily used with HFRG joint locks to weaken motor action by altering the subject's thought process?

The technique of distraction is primarily used in conjunction with HFRG joint locks because it effectively shifts the subject's focus and alters their thought process, which in turn can weaken their motor actions. When a person is distracted, their cognitive load is increased and their attention is diverted away from the physical response needed to counter the joint lock. This creates an opportunity for the practitioner to maintain control and effectiveness of the joint lock.

Distraction can take many forms, including verbal commands, sudden movements, or environmental changes, all of which serve to disrupt the subject's concentration and decision-making abilities. By diminishing their ability to respond effectively, the practitioner can gain an advantage in managing the situation.

In contrast, the other options like stunning and shocking do not align with the concept of altering thought processes through distraction. Stunning typically refers to the immediate physical impact that affects the nervous system but does not rely on psychological manipulation. Shocking usually pertains to delivering an unexpected stimulus to provoke a reaction but does not specifically focus on changing thought processes in a way that weakens motor functions. Thus, distraction is the most relevant and effective technique in this context.