Dependency of odds to cross from the less trodden to the well-trodden arena on visit number, in individual flies.

The X-axis represents the ordinal number of visit (percentage out of total amount of visits). The Y- axis represents the difference in the likelihood of crossing across the session. As shown, 18 out of 24 flies show a decrease in crossing likelihood. Black lines signify males and red lines females.横轴表示访问序数（占总访问次数的百分比），纵轴表示跨会话可能性的差值。如图所示，24只果蝇中有18只的跨会话可能性出现下降。黑色线条代表雄性个体，红色线条代表雌性个体。