However , it remains unclear how 2 - D activity in the higher gaze centres results in the right pattern of 3 - D activity in the brainstem .
Thus torsional control is only needed for movements toward or away from Listing 's plane .
It remains unclear how 2 - D activity in the higher gaze centres results in the right pattern of 3 - D activity in the brainstem .
Thus torsional control is only needed for movements toward or away from Listing 's plane .