Have you ever noticed how if you do watch a TV show after a long spell of abstinence, what it does to your brain?
Read an article about the effect of the first silent black and white vampire movie "Nosferatu" on audiences of the time. Cheap chuckles and archaic effects by today's standards.
People screamed and dropped unconscious in the theaters over the terror of it. Nerves had never experienced a trauma like this. Now we are numb from the continuous overkill. Psycho blood and guts on TV just part of every day sense over-stimulation that is part of "normal" life.
If I watch a TV show now, I feel a bad effect for a long time after if it is not some educational thing. Worst residual garbage is often from the commercials.
John