Which fibers connect regions within the same hemisphere, including short U fibers that connect adjacent gyri?

• A. Association Fibers
• B. Commissural Fibers
• C. Projection Fibers
• D. Short Fibers

Answer: (A)

Association fibers connect cortical regions within one hemisphere, enabling communication across different parts of the same side of the brain. This includes short U-fibers, which arch just beneath the cortex to link adjacent gyri, supporting local processing and rapid integration of information. Long association fibers also connect more distant cortical areas within the same hemisphere, contributing to higher-level functions like language and complex perception. In contrast, commissural fibers cross the midline to connect corresponding areas across the two hemispheres (the major example being the corpus callosum), and projection fibers carry signals between the cortex and lower brain structures or the spinal cord. So, the connections described are association fibers.