Lifespan development of pro- and anti-saccades: multiple regression models for point estimates

Area of Science:

• Neuroscience
• Cognitive Psychology
• Developmental Psychology

Background:

• Saccade task performance offers insights into frontal lobe function.
• Understanding life span changes in saccade tasks is crucial for neurological and psychiatric research.
• Previous research has not fully detailed developmental trajectories and aging effects on saccade parameters.

Purpose of the Study:

• To model life span developmental effects on anti- and pro-saccade task parameters using regression analysis.
• To investigate age-related changes in saccade functions from childhood to old age.
• To determine if frontal lobe functions exhibit distinct developmental and aging patterns compared to other functions.

Main Methods:

• Regression analysis was applied to data from 327 participants aged 9 to 88 years.
• Life span developmental effects on pro- and anti-saccade task parameters were modeled.
• Intra-subject variability and specific saccade task parameters were analyzed across the life span.

Main Results:

• Developmental effects up to age 27 were predominantly curvilinear, not linear.
• The most significant developmental differences were observed in intra-subject variability and anti-saccade task parameters.
• Aging was characterized by a global linear decline in saccade functions, without differential effects seen in development.
• Frontal lobe functions demonstrated protracted development but not disproportionate age-related deterioration.

Conclusions:

• Frontal lobe functions are characterized by prolonged development.
• Aging affects saccade functions linearly, without disproportionate decline in frontal lobe specific functions.
• The applied regression models can be utilized for individual predictions in clinical and applied research settings.