The Relationship Between Stroke And Physiological Reflexes?
good morning do, permission to ask about the results of physical examination / neurological exam
Hello Filbert, Thank you for the question.
Reflex examination is an objective examination of neurological examination that helps in determining the level of damage to the nervous system. Reflexes are the motor responses of the nervous system, in the form of short-lived muscle contractions triggered by a stimulus. Physiological reflexes, for example the knee or biceps reflex, are reflexes that are triggered by hitting tendons with hammer reflexes. This causes the muscles to become passively attracted which then activates the sensory nerves in the spinal cord, followed by depolarization (activation) of the motor nerves (which regulate body movements). Motor nerve activation causes muscle contractions and the muscles look twitching (twitching). This reflex response is increased in lesions / disorders of the upper motor neuron (UMN) / upper motor nerves such as stroke. UMN acts to inhibit the work of the reflex system in the spinal cord. Thus, if UMN experiences a disruption, there will be no response to the work of the reflex system on the spinal cord resulting in physiological reflexes.
The most well-known pathological reflex is the Babinski reflex, which is the movement of the toes up / extension followed by other toes that open; which is triggered by stimulation. This is a normal primitive withdrawal response in newborns for up to several months. This response will be suppressed by the activity of the central nervous system (brain) sometimes before the age of 6 months so that this reflex will disappear along with the age of the baby. Damage to the nerve pathways from the brain causes loss of emphasis on this response so that this response can be triggered again. The appearance of this reflex indicates an upper motor nerve disorder.
Hope this information helps.