This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Nervous system, Subject name: Physiology
[{'content': 'The parvocellular pathway from lateral geniculate nucleus to visual coex is most sensitive for the stimulus of \nSelect and explain. \nA. Color contrast, B. Luminance contrast, C. Temporal frequency, D. Saccadic eye movements', 'role': 'user'}, {'content': "Answer: A \nExplanation: From the lateral geniculate nucleus, a magnocellular pathway and a parvocellular pathway project to the visual coex. The parvocellular pathway, from layers 3-6, carries signals for color vision, texture, shape, and fine detail. The parvocellular pathway also carries color opponent data to the deep pa of layer 4.Ref: Ganong's Review of Medical Physiology, Twenty-Third Edition", 'role': 'assistant'}]