Visual perception serves as the basis for much of the higher level cognitive processing as well as human activity in general. Here we present normative estimates for the following components of visual perception: the visual perceptual threshold, the visual short-term memory capacity and the visual perceptual encoding/decoding speed (processing speed) of visual short-term memory based on an assessment of 94 healthy subjects aged 60-75.
The estimates are presented at total sample level as well as at gender level. The estimates were modelled from input from a whole-report assessment based on A Theory of Visual Attention (TVA). In addition to the estimates themselves, we present correlational data on between the estimates and self-reported demographic data and activities of daily living. The correlates suggests that age, video gaming activity and employment status may significantly impact the encoding speed of Visual Short-term Memory (VTSM) but not the capacity of VSTM nor the visual threshold. The estimates will be useful for future studies into the effects of various types of intervention and training on cognition in general and visual attention in particular. (