Figure 4. Learning and memory behaviors display the earliest age-related decline.

During the first week of adulthood, motility and chemotaxis ability are maintained, while 1× massed and 7× spaced learning and long-term associative memory abilities are lost by Day 7 and Day 5 of adulthood, respectively. n = 6 trials (except Mobility, n = 1 trial); ± SEM.