Using Transcranial Direct Current Stimulation to Enhance Creative Cognition: Interactions between Task, Polarity, and...

Area of Science:

• Neuroscience
• Cognitive Psychology

Background:

• Creative cognition involves distinct processes: idea generation and idea selection.
• Transcranial direct current stimulation (tDCS) is increasingly used to investigate the neural underpinnings of these creative processes.
• Existing research presents varied findings influenced by stimulation parameters and task demands.

Purpose of the Study:

• To review tDCS protocols that reliably enhance creative cognition.
• To elucidate the relationship between stimulation site, polarity, and task demands in modulating creative performance.
• To identify specific neural mechanisms underlying idea generation and selection.

Main Methods:

• Systematic review of studies employing tDCS for creative cognition.
• Analysis of findings based on stimulation location (e.g., left inferior frontotemporal cortex, left dorsolateral prefrontal cortex, frontopolar cortex) and polarity (anodal, cathodal).
• Correlation of tDCS effects with task requirements focusing on idea generation versus idea selection.

Main Results:

• Cathodal tDCS over the left inferior frontotemporal cortex improved idea generation tasks.
• Anodal tDCS over the left dorsolateral prefrontal cortex and frontopolar cortex enhanced performance on idea selection tasks.
• Demonstrated functional selectivity of tDCS for distinct components of creative thinking.

Conclusions:

• tDCS can selectively enhance specific facets of creative cognition.
• Left dorsal and inferior lateral frontotemporal cortex play dissociable roles in different creativity tasks.
• Further research is needed to optimize tDCS for cognitive enhancement in creativity.