For a particular cell in the visual system, the pattern of retinal stimulation that most effectively causes the cell to fire. For some cells, this pattern is defined simply in terms of a retinal location; for others, the most effective input has a particular shpae, color, or direction of motion. feature detectors.
Cancun in February. Cancun weather in February is pretty hot with temperatures of 25Â° and 25Â° degrees, might be good for outdoors activity. As it almost never rains in Cancun at February, it is good weather for hanging outside and exploring Cancun.
Cancun weather in May through September is the warmest time to visit when the average high temperature exceeds 90 degrees each month -- peaking at 92.5 in August. Cancun weather in December, January and February is coolest when the average high temperatures are about 83 degrees.