upper motor neuron

Introduction

A neuron within the cerebral cortex (motor cortex) contributing to the corticospinal tract or corticobulbar tract.

Not true motor neurons.

Distinguish from lower motor neurons (true motor neurons).

Pathology

• lesions result in upper motor neuron signs

More general terms

• motor neuron

More specific terms

• Betz cell

Additional terms

• lower motor neuron
• upper motor neuron sign (pyramidal tract sign)