Processing counterfactual and hypothetical conditionals: an fMRI investigation

Area of Science:

• Cognitive Neuroscience
• Psychology
• Neuroimaging

Background:

• Counterfactual thinking, imagining alternative outcomes, is common but its neural basis is unclear.
• Distinguishing counterfactuals from factual/hypothetical information on a neural level requires further investigation.

Purpose of the Study:

• To investigate the neural correlates of processing counterfactual sentences.
• To compare brain activation for counterfactuals versus hypothetical conditionals.

Main Methods:

• Used neuroimaging (fMRI implied) to examine brain activity.
• Presented participants with counterfactual (subjunctive mood) and hypothetical (indicative mood) conditional sentences.
• Stimuli were presented visually and aurally.

Main Results:

• Found significant activation in the right occipital cortex (cuneus) and right basal ganglia (caudate nucleus) during counterfactual processing.
• Occipital activation persisted even with auditory-only presentation, ruling out visual artifacts.
• Hypothetical conditionals did not elicit the same pattern of activation.

Conclusions:

• Counterfactual processing involves sustained mental imagery and integration of factual and suppositional information.
• Neural activity in the right occipital cortex and basal ganglia supports the cognitive demands of counterfactual thinking.
• Findings align with mental model theory's predictions regarding cognitive processing of conditionals.