Hanging on the telephone: Maintaining visuospatial bootstrapping over time in working memory

Area of Science:

• Cognitive Psychology
• Neuroscience
• Human Memory

Background:

• Visuospatial bootstrapping (VSB) describes how spatial configurations improve verbal working memory.
• This phenomenon highlights the interplay between multimodal coding and long-term memory in working memory.

Purpose of the Study:

• To determine if the VSB effect persists over a 5-second delay.
• To investigate the underlying mechanisms influencing VSB during memory retention.

Main Methods:

• Four experiments tested the VSB effect using digit sequences presented in a T-9 keypad layout versus a single location.
• Concurrent tasks during a 5-second delay included articulatory suppression, spatial tapping, a visuospatial judgment task, and verbal task attentional manipulation.

Main Results:

• The VSB effect, a verbal recall advantage from spatial configurations, was consistently observed.
• Articulatory suppression amplified the VSB effect.
• Spatial tapping and visuospatial judgment tasks eliminated the VSB effect.
• Increased attentional demands on verbal tasks reduced but did not abolish the VSB effect.

Conclusions:

• Familiar visuospatial information at encoding supports verbal working memory over brief delays.
• The VSB effect's persistence is modulated by the type of concurrent task, influencing modality-specific and general processing resources.