Which term describes signals occurring on the same side of the brain?

Which term describes signals occurring on the same side of the brain?

• A. Ipsilateral
• B. Contralateral
• C. Bilateral
• D. Unilateral

Answer: (A)

Ipsilateral describes signals that stay on the same side of the brain. The term combines ipsi- meaning same and lateral meaning side, so when a neural pathway or signal remains on the same hemisphere or side, it is ipsilateral. This is distinct from contralateral, where signals cross to the opposite side; bilateral, where both sides are involved; and unilateral, where activity is limited to one side. For example, some sensory systems, like olfaction, tend to transmit information to the cortex on the same side as the source, illustrating ipsilateral processing.

Ipsilateral describes signals that stay on the same side of the brain. The term combines ipsi- meaning same and lateral meaning side, so when a neural pathway or signal remains on the same hemisphere or side, it is ipsilateral. This is distinct from contralateral, where signals cross to the opposite side; bilateral, where both sides are involved; and unilateral, where activity is limited to one side. For example, some sensory systems, like olfaction, tend to transmit information to the cortex on the same side as the source, illustrating ipsilateral processing.