"Wanting" versus "needing" related value: An fMRI meta-analysis.

Area of Science:

• Neuroscience
• Cognitive Science
• Neuroimaging

Background:

• Consumption and addiction are linked to imbalances in 'wanting' (reward cue valuation) and 'needing' (biologically significant stimuli).
• Understanding the neural distinctions between 'wanting' and 'needing' is crucial for explaining excessive consumption behaviors.

Purpose of the Study:

• To investigate and compare brain activation patterns associated with 'wanting' versus 'needing' value.
• To elucidate the neural mechanisms underlying reward-seeking and deprivation-driven behaviors.

Main Methods:

• Utilized activation likelihood estimation (ALE) neuroimaging meta-analysis.
• Analyzed brain activation data from studies on reward cue perception ('wanting') and food perception in hunger ('needing').
• Performed separate, contrast, and conjunction meta-analyses to identify distinct and overlapping neural correlates.

Main Results:

• 'Wanting' consistently activated the ventral tegmental area, striatum, and pallidum, regions involved in behavioral activation and choice.
• 'Needing' consistently activated the middle insula and caudal-ventral putamen, regions primarily directing choice.
• Identified distinct neural networks for 'wanting' and 'needing' value assignment.

Conclusions:

• 'Wanting' demonstrates a greater influence on consumption and behavioral activation compared to 'needing'.
• The findings highlight differential neural control mechanisms for reward-driven versus deprivation-driven behaviors.
• This research provides insights into the neural basis of motivated behavior and its potential dysregulation.