Gage survived the accident and had his memory, speech, and motor skills intact, but he had well-documented changes to his personality. (The photograph is of brain-injury survivor Gage, 1823–1860, shown holding the tamping iron which injured him).
The frontal lobe is so vulnerable to injury because of its location. Damage--any kind at all--to this lobe can lead to one or more of these problems:
Impairment of risk-taking activities
Reduction in sense of taste and/or smell
Damage to spontaneity and mental flexibility
Increased susceptibility to distractions
Finally, after all this time, after more than 5 years, I discovered, through the story of Phineas Gage, why I had no filters after the stroke. But a little background first.
Of all the parts of the brain, the cerebrum or cortex is the largest part, which is further sub-divided into four lobes: the frontal lobe, parietal lobe, occipital lobe, and temporal lobe. (There are other "areas and sections," too, but the lobes are the subject of my focus).
Responsibilities of the parietal lobe: information processing, movement, spatial orientation, speech, visual perception, recognition, perception of stimuli, pain and touch sensation, and cognition
Responsibilities of the occipital lobe: visual reception, visual-spatial processing, movement, and color recognition
Responsibilities of the temporal lobe: visual memory and verbal memory involved with hearing and speech
My brain damage was in the first and the second—frontal and parietal, the former controlling behavior and emotions when it came to my filters, or lack of them.
I remember it well. After my stroke, as soon as I was mobile, I went out to lunch with my son. It was an Indian place that had a huge buffet. We ate our meal and as soon as the check arrived, we paid at the counter. All of the sudden, a hefty man, who couldn't wait for the food, cut to my right, almost knocking me over.
I began to chant. “Rude.” Then louder. “RUDE.” Then louder. “RUDE!” Then the ultimate. “FUCKING RUDE!” That chanting at the peak went on for about a minute. My son tried to usher me out, but I was transfixed on that spot, with people in the restaurant staring at their plates. The man continued grabbing food from the buffet. That, my friends, is when I knew: my personality, formerly consisting of peace, decorum, and patience, changed--completely. My filters were loose and couldn't be roped it.
Granted, I was aphasic more that first year, more than I am now, but I was off and gone that first year, screaming at receptionists if they didn't understand me, yelling at doctors (yes, doctors) if their opinion was contrary to mine, berating waitresses by repeating my order loudly if they were not in tune with me. I was a mess. I couldn't recognize me, as if there were two of me, one shrieking and the other assessing, all because of the frontal lobe not controlling my impulses.
I am better now, though still not perfect. The word "fuck," "shit," and/or "crap" are always present if I lose my filters for the moment, like "Fuck this" or "Don't be a shit" or "This is crap." Sometimes, I'll combine them as in "Fuck! This shit is crap."
Sometimes, saying "fuck, shit and/or crap" feels so cathartic. But not all the time, as I did that first year.
I'm going to have surgery July 14 to correct my dropped foot. I'll write a post about the surgery soon. So if I ever do anything athletic again, I'd wear a helmet. I wouldn't want to damage the frontal lobe again. Fuck no!