Speed of Visual Search in Old Age: 1950 to 2016

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Aging Research

Background:

• Investigating the impact of aging on cognitive functions, specifically visual search and response selection, is crucial for understanding age-related changes.
• Previous research has primarily focused on reaction time as a measure of cognitive speed.

Purpose of the Study:

• To review scientific literature from 1950 to 2016 on how aging affects visual search speed and discrimination between signals and response choices.
• To analyze the evolution of models used to explain age-related cognitive performance.

Main Methods:

• Comprehensive literature review spanning over six decades.
• Utilized 'Brain Google' (likely referring to advanced search or indexing of neuroscientific literature) for data retrieval.

Main Results:

• The review identified 'mild existential despondency' as a noted outcome, suggesting potential psychological impacts alongside cognitive changes.
• Models of age-related cognitive changes have historically relied on speed measures, interpreted in diverse ways.

Conclusions:

• The conceptualization of 'speed' in cognitive models has varied, serving as a performance index, functional characteristic, psychometric factor, or neurophysiological marker.
• Since the 1990s, neuroimaging advancements have significantly altered the data and research questions concerning age-related cognitive processes.