If the cortex receives poor afferent information from a joint, what neurological condition ensues?

• A. Neurological inhibition
• B. Neurological facilitation
• C. Neuromuscular dysfunction
• D. Joint degeneration

Answer: (B)

When the cortex doesn’t receive good feedback from a joint, the motor system has to compensate to keep movement and joint protection functioning. The brain increases its drive to the motor pathways in response to unreliable sensory input, leading to a state of neurological facilitation. In other words, reduced joint afferent information tends to make the motor system more excitable or facilitative as a compensatory mechanism.

This isn’t about structural joint damage (joint degeneration) or a simple inhibitory state—those would involve different mechanisms. Neuromuscular dysfunction is a broad label, but the specific response to poor sensory input described here is facilitation.