All are true regarding golgi tendon organ, EXCEPT:
Golgi tendon organs are encapsulated sensory receptors through which muscle fibres pass. They are stimulated by increased tension in the connecting muscle thus it basically detects muscle tension. It is the receptor for inverse stretch reflex and when stimulated it causes inhibiton of alpha motor neurons. Ref: Ganong's Review of Medical Physiology, 22nd Edition, Page 131
Inverse stretch reflex
Detects changes in muscle length
Inhibits alpha motor neuron
Encapsulated sensory receptor