Complexity hypothesis ; General slowing ; Processing speed ; Process-specific slowing. Age-related cognitive slowing refers to the common finding that humans tend to slow down in cognitive processing with increased adult age. Related work by Cattell in and Koga and Morant in suggested that individual differences in reaction time RT in elementary sensory tasks were potentially important measures of cognitive performance. Further, individual differences in the RT measures were not attributable entirely to peripheral, sensory processes but instead appeared to represent basic properties of the central nervous system. Birren also emphasized that age-related slowing was a central, rather than peripheral, phenomenon and that slowing was related to task complexity.
Duncan Guest, Christina J. Howard, Louise A. Brown, Harriet Gleeson; Aging and the rate of visual information processing. Journal of Vision ;15 14 Multiple methods exist for measuring how age influences the rate of visual information processing. The most advanced methods model the processing dynamics in a task in order to estimate processing rates independently of other factors that might be influenced by age, such as overall performance level and the time at which processing onsets. However, such modeling techniques have produced mixed evidence for age effects.
We asked Denise Park, director of research at the Center for Vital Longevity and chair in Behavioral and Brain Sciences at the University of Texas at Dallas, what happens to the brain and cognition as we simply get older and what we can do to mitigate the effects of it. The brain shrinks, or loses volume, with age, primarily in the frontoparietal and hippocampal regions. The occipital lobe, in the back of the brain, shrinks much less with age. It is quite common for older adults to show increased activity in both frontoparietal regions compared to younger adults who might perform the same word judgment task primarily in the left frontoparietal region.
Understanding how aging changes cognition is important. It can help you understand what to anticipate when it comes to your own aging. This can be discouraging news to many people. Which means they might feel reluctant to learn more about this. But the news is not all bad.