Final answer:
Nociceptive pathways, thalamus, primary somatosensory cortex, and hypothalamus are factors that alter pruritic neural impulses in the brain
Step-by-step explanation:
The factors that alter pruritic neural impulses in the brain include the nociceptive pathways, thalamus, primary somatosensory cortex, and the hypothalamus. Most axons carrying pruritic information from the spinal cord project to the thalamus, where the neural signal undergoes final processing in the primary somatosensory cortex. However, one pathway projects directly to the hypothalamus, which modulates the cardiovascular and neuroendocrine functions of the autonomic nervous system.