Neural processes underlying intuitive coherence judgments as revealed by fMRI on a semantic judgment task

Area of Science:

• Cognitive Neuroscience
• Neuroimaging

Background:

• Daily decisions often rely on intuition, an effortless evaluation of complex situations without conscious retrieval of information.
• Neural mechanisms underlying intuitive versus explicit judgments remain largely unknown.

Purpose of the Study:

• To investigate the neural processes associated with intuitive judgments.
• To determine if these neural processes differ from those involved in explicit judgments.

Main Methods:

• Functional magnetic resonance imaging (fMRI) was used to compare brain activity during intuitive and explicit judgments.
• Participants performed a semantic coherence judgment task.

Main Results:

• Intuitive judgments, compared to explicit judgments, showed increased neural activity in bilateral inferior parietal and right superior temporal cortex.
• These areas are associated with integrating remote associates into a coherent representation.

Conclusions:

• Intuitive coherence judgments engage neural systems involved in semantic network activation.
• Findings support the hypothesis that intuition relies on widespread semantic network activation without conscious representation.