Von Economo Neurons is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Von Economo neurons (VENs) (also spelled von Economo neurons) are a specialized class of large, pyramidal projection neurons found exclusively in the brains of certain primates, including humans, great apes, and some cetaceans. These neurons are primarily located in layer 5 of the anterior cingulate cortex (ACC) and the frontoinsular cortex (FI), and are implicated in disorders including frontotemporal dementia (FTD), Alzheimer's disease, and amyotrophic lateral sclerosis (ALS).
Von Economo neurons (VENs) are a specialized class of large, pyramidal neurons found primarily in the anterior cingulate cortex and anterior insula of primates, including humans. These neurons are thought to play crucial roles in rapid decision-making, social cognition, and consciousness. VENs have been implicated in neurodegenerative conditions including frontotemporal dementia, Alzheimer's disease, and autism spectrum disorders, where they show selective vulnerability.
| Property |
Value |
| Location |
Layer 5 of ACC (Brodmann area 24), Frontoinsular cortex (BA 13/14) |
| Morphology |
Large, elongated pyramidal soma, single apical dendrite |
| Size |
20-30 micrometers soma diameter |
| Neurotransmitter |
Glutamate (excitatory) |
| Projections |
Subcortical structures, cortical areas |
¶ Discovery and History
Von Economo neurons were first described in 1925 by Austrian neurologist Constantin von Economo (1876-1931) during his studies of the cytoarchitecture of the human cerebral cortex. He noted their unique distribution in the anterior cingulate and frontoinsular cortices.
VENs are found in:
- Anterior Cingulate Cortex (ACC), especially area 24
- Frontoinsular Cortex (FI), areas 13 and 14
- Orbitofrontal cortex (lesser density)
VENs possess distinctive features:
- Large, elongated cell body (unlike typical pyramidal neurons)
- Single, thick apical dendrite
- Prominent basal dendrites
- Large axonal projections
Efferent projections to:
- Subcortical nuclei (thalamus, basal ganglia)
- Brainstem autonomic centers
- Other cortical regions
Afferent inputs from:
- Limbic system
- Sensory cortices
- Autonomic centers
- Emotional Processing: Integration of emotional and cognitive information
- Social Cognition: Understanding self and others, empathy
- Autonomic Control: Regulation of visceral functions
- Decision Making: Value-based decision making in uncertain situations
- Error Detection: Monitoring conflicts in information processing
- VEN activity correlates with error commission in tasks
- VENs show selective activation during social emotional stimuli
- Lesions in VEN-rich regions impair decision-making
Key Findings:
- Significant reduction in VEN numbers in FTD (up to 70% loss)
- Particularly affected in the behavioral variant (bvFTD)
- VEN loss correlates with early social/emotional deficits
- May be a specific marker for FTD pathology
Research Evidence:
- Post-mortem studies show selective VEN vulnerability
- Early VEN loss predicts bvFTD diagnosis
- Tau pathology preferentially targets VENs
- Moderate VEN reduction in AD
- Correlates with executive dysfunction
- May contribute to early social cognition deficits
- VEN loss in ALS with or without FTD
- Shared pathology between ALS and FTD
- TDP-43 inclusions in VENs
- Altered VEN morphology in some ASD cases
- Possible developmental abnormality
- Controversial findings
| Species |
VEN Presence |
| Human |
Abundant |
| Great Apes (chimpanzee, gorilla, orangutan) |
Present |
| Macaques |
Rare/absent |
| Cetaceans (whales, dolphins) |
Present |
| Other mammals |
Absent |
The presence of VENs in both primates and cetaceans suggests convergent evolution for complex social cognition.
- Golgi silver staining
- Neurofilament immunohistochemistry
- Nissl staining
- 3D reconstruction from tissue sections
- Single-cell transcriptomics
- Brain imaging (limited resolution)
- VEN count as post-mortem diagnostic marker
- PET ligands targeting VEN-specific proteins in development
- Neuroprotective strategies for VEN preservation
- Gene therapy approaches (theoretical)
The study of Von Economo Neurons has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
- von Economo C (1925). Eine neue Art von Grosshirnpyramidenzellen. Journal fur Psychologie und Neurologie.
- Allman JM et al. (2011). The von Economo neurons in the frontoinsular and anterior cingulate cortex. Annals of the New York Academy of Sciences. PMID:21291473.
- Seeley WW et al. (2006). von Economo neurons in frontotemporal dementia and autism. Brain. PMID:16769746.
- Kim EJ et al. (2012). Selective neuronal loss in frontotemporal dementia. Brain. PMID:22572539.
- Najm IM et al. (2021). Von Economo neurons: Their role in the pathophysiology of neurodegenerative disorders. Progress in Neurobiology. PMID:33838956.
- Santos M et al. (2011). von Economo neurons in the human brain. Journal of Comparative Neurology. PMID:21500237.
- Butti C et al. (2012). von Economo neurons: Clinical and evolutionary perspectives. Cortex. PMID:22591820.
- Hodge RD et al. (2019). Transcriptomic evidence for von Economo neuron vulnerability. Nature Neuroscience. PMID:31768050.
- Evrard HC et al. (2012). The discovery of von Economo neurons. Behavioural Brain Research. PMID:22743073.
- Cauda F et al. (2013). Functional anatomy of the von Economo neurons. Cortex. PMID:24269024.
- Brain Initiative - Von Economo Neurons
- NIH - Frontotemporal Dementia Information
- Alzheimer's Association - FTD Resources
WikiJS ID: New Page | Path: cell-types/von-economo-neurons | Last Updated: 2026-03-03