Final answer:
Additional sensory nerve conduction studies are performed when suspecting Brachial plexus injuries to assess sensory perception and identify any nerve damage.
Step-by-step explanation:
When suspecting Brachial plexus injuries, additional sensory nerve conduction studies can be performed. These studies involve testing the sensory perception in different areas of the body to assess if there are any abnormalities or damage to the nerves. This can be done by applying light touch, temperature, vibration, pain, or proprioception stimuli to various locations on the skin and asking the patient to perceive and differentiate those sensations.