PSY 101 Lecture Notes - Lecture 17: Diffuse Axonal Injury, Frontal Lobe Injury, Occipital Lobe
Document Summary
Frontal lobe injury occurs when brain tissue is accelerated forward into skull, bruises brain tissue and tears blood vessels. Occipital lobe injury occurs when brain tissue is accelerated into the back of the skull. Temporal lobe injury occurs when sides of brain tissue hits bony ridges on the skull. Coup/contrecoup injury occurs when brain hits skull on opposite side of where the impact occurs. Diffuse axonal injury does not require direct head impact, some parts of brain can move separately from others, can destroy axons needed for brain function; jerking forward with seatbelt on. Brain needs large amounts of glucose to activate cellular pumps to counter flooding of ions. Adolescents more susceptible to second impact syndrome. Balance/hearing, finger rub outside of ear/balance error scoring system looking for stability impact testing takes 20-35 minutes to assess concussion symptoms. Ocular dysfunction - woozy when surrounded by moving objects. Vestibular - difficulty with balance and coordination.
