Complex sentence: Older children and adults with atypical neurology (for instance, people with cerebral palsy) may retain these reflexes and primitive reflexes may re-appear in adults because of certain neurological conditions including, but not limited to, dementia, traumatic lesions, and strokes.
Split into simpler sentences: Older children and adults with atypical neurology (e.g., people with cerebral palsy) may retain these reflexes and primitive reflexes may reappear in adults. Reappearance may be attributed to certain neurological conditions including, but not limited to, dementia, traumatic lesions, and strokes.