PSYB65H3 Chapter Notes - Chapter 4: Oligodendrocyte, Resting Potential, Stimulus Modality
Document Summary
Chapter 4: how do neurons use electrical signals to. Most common neuro disease worldwide 1/20 people experience an epileptic seizure in their lifetime. Some epileptic seizures can be linked to a specific symptom (infection, tumor, trauma, etc: others appear to arise spontaneously. 3 common symptoms: an aura/warning of an impending seizure. Epilepsy reveals that the brain is normally electrically active and that if this activity become abnormal, the consequences are severe. 4. 1 searching for electrical activity in the nervous. Early discoveries about the nature of electricity led to proposals that it plays a role in conducting info in the nervous system. Electricity = flow of electrons from a body that contains a higher charge (more electrons) to a body that contains a lower charge (fewer electrons) If biological tissue contains an electrical charge, the charge can be recorded: if tissue is sensitive to an electrical charge, the tissue can be stimulated.
