Having a crossing or decussation of neural structures; characterized by nerve fibers that intersect or cross over each other.
From 'chiastoneuro-' (chiasm + neuro) plus the adjective ending '-ous'. This technical anatomical term describes the physical arrangement of crossed nerve fibers.
The chiastoneurous pathways in your spinal cord mean that a stroke on the right side of your brain actually paralyzes the left side of your body. This crossing happens in the brainstem, which is why neurologists test reflexes on both sides to locate brain injuries!
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