Final answer:
b) 5 seconds Nystagmus resulting from the VOR reflex usually subsides within approximately 5 seconds after the stimulus that caused it has ceased. Neural signaling through the pathways relevant to such reflexes occurs in a fraction of a second to ensure rapid response.
Step-by-step explanation:
The question is about the Vestibulo-ocular reflex (VOR), which helps to stabilize gaze during head movement. The nystagmus, which is a rapid, involuntary eye movement, has to do with the VOR reflex. This reflex is a result of the balance mechanism of the inner ear and assists in maintaining an image steady on the retina as the head moves. Normally, when the head stops turning, the nystagmus resulting from the VOR reflex should subside quickly. The correct option is b) 5 seconds, which is the typical duration for the sensation of nystagmus to diminish after a stimuli such as rapid head movement has ceased.Regarding the signaling speed through the sensory pathway, the central nervous system, and the motor command pathway, it is very fast. The correct answer to this part of the question is c. fraction of a second.
Neural signaling involved in such reflexes is designed to be extremely quick to maintain balance and orientation.The Nystagmus resulting from the VOR reflex should subside within a fraction of a second (option c). The VOR reflex is responsible for stabilizing the visual image on the retina during head movements. It involves coordinated movements of the eyes and takes place rapidly to minimize any disruption to visual perception. Therefore, the correct answer is option c, and the Nystagmus resulting from the VOR reflex should subside within a fraction of a second.