The anatomy of apathy: A neurocognitive framework for amotivated behaviour.
Level 5 - mechanism / opinion, no new human data
Narrative review and theoretical framework synthesizing neuroimaging literature without systematic review methodology
PubMed 28689673 · doi:10.1016/j.neuropsychologia.2017.07.003
What was done
The authors reviewed neuroimaging literature across multiple neurological disorders—including Parkinson's disease, Alzheimer's disease, and stroke—to identify anatomical correlates of apathy. Using these imaging findings, they formulated a neurocognitive framework linking specific motivational sub-processes (initiating effort, sustaining effort, and value learning) to neural circuits.
What was found
The abstract reports no quantitative values or effect sizes. Qualitatively, across clinical disorders and diverse imaging modalities, apathy was consistently linked to disruption of the dorsal anterior cingulate cortex (dACC), ventral striatum (VS), and connected regions. The authors framed motivated behaviour as relying on this network for willingness to work, persistence, and reinforcement learning.
Why it matters
It unifies findings across distinct neurodegenerative and focal brain disorders into a single transdiagnostic neuroanatomical model of apathy centered on dACC-ventral striatal circuits, providing testable mechanistic targets for future intervention studies.
Limits
The abstract describes a narrative rather than a systematic review or quantitative meta-analysis, omitting search criteria, study counts, and sample characteristics. The proposed sub-process model is theoretical and not empirically validated within the review itself.
Cited by
- supports Apathy commonly occurs across multiple neurological disorders, including stroke, Alzheimer's disease, Parkinson's disease, and multiple sclerosis.