The HPNA light is only on if a device is using that connection, usually a STB connected via coax (can be over twisted pair in rare situations like apartments). It sounds like your setup uses ethernet which would not turn on the HPNA light.
The previous scene is an excerpt from Brain on Fire: My Month of Madness, and just one of many hallucinations Susannah Cahalan experienced in 2009 during her month-long hospital stay, in which she was diagnosed with a rare neurological autoimmune disease, known as anti-NMDA receptor encephalitis.
Hypoxic-Ischemic Encephalopathy, or HIE, also known as Intrapartum Asphyxia. Oxygen deprivation, or intrapartum asphyxia, can cause cerebral palsy. One of the most common types of brain damage caused by oxygen loss is called hypoxic-ischemic encephalopathy, or HIE.ypoxic-ischemic encephalopathy, or HIE, is the brain injury caused by oxygen deprivation to the brain, also commonly known as intrapartum asphyxia. The newbornâs body can compensate for brief periods of depleted oxygen, but if the asphyxia lasts too long, brain tissue is destroyed.