日常拍殺蚊子時,視線跟循蚊子總是跟丟了。可能的原因有二:(1)背景太亂或(2)人眼跟循機制的限制。為回答此一問題,我們在背景全白的房間內置入蚊子,3位觀察者分別跟循了3隻熱帶家蚊和3隻白線斑蚊,均能輕易地長時間跟循其飛行。證明了視線無法長時間跟循蚊子飛行的原因是環境背景太亂,而不是紋子飛行的路徑超出人眼跟循機制的範圍。
In daily life we often track flying mosquitoes while trying to kill them, but always fail to continuously follow their flying paths. The reason of that might be either (1) the complex background of the environment camouflaged the mosquito from tracking or (2) human pursuit mechanism could not follow the mosquito's flying path. To answer this question, we arranged a small room, 1.7×1.5×2.2m (L(subscript X)W(subscript λ)H), with plain wall. Inside which three observers pursued consecutively 6 mosquitoes (3 Culex quinquefasciatus and 3 Aedes albopictus). All three observers could continuously pursue the flying mosquito over the plain background. This result implies that tracking failure is due to complex background, not from mismatch between human pursuit mechanism and mosquito's flying path.