A sudden and temporary alteration in brain function caused by massive electrical discharges in a group of nerve cells?

• A. Transient Ischemic Attack (TIA)
• B. Seizure
• C. Epilepsy
• D. Primary Seizures

Answer: (B)

A seizure is a sudden, temporary alteration in brain function caused by massive electrical discharges in a group of nerve cells. When neurons fire abnormally in a synchronized way, normal brain activity is briefly disrupted, leading to manifestations such as convulsions, altered awareness, or sudden temporary symptoms that resolve as the electrical activity ends. This exactly matches the description given.

A transient ischemic attack is due to a temporary reduction in blood flow to brain tissue, causing neurologic deficits from ischemia rather than abnormal electrical activity, so it doesn’t fit the mechanism described.

Epilepsy refers to a condition characterized by a tendency to have recurrent unprovoked seizures, not to a single event itself, so it’s not the event being described.

Primary seizures isn’t a standard label for the described phenomenon and doesn’t clearly capture the specific event or mechanism.

Therefore, the seizure option best fits the scenario.