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
The parvocellular pathway from lateral geniculate body to visual coex carries signals for detection of 
Select and explain. 
A. Colour contrast, B. Luminance contrast, C. Temporal frequency, D. Saccadic eye movements
A: Colour contrast
Answer: A: Colour contrast 
Explanation: Parvocellular pathway carries signal for detection of colour vision, texture, shape, fine detail. Ref: Ganong 25th ed/page 193