"Why are you back?" The old horse still had a bandage on his head, and it seemed that he had indeed undergone surgery.

Lao Ma said that the clothes when he was admitted to the hospital were all in the hospital, come and clean up. I knowingly asked him how he got his head, and took the opportunity to talk to him for a while, talking about some things when he was still in the hospital. But the more we talked, the more uncertain I became, he remembered everything clearly, and I saw that his mannerisms and ways of speaking were no different from before, and I couldn't help but feel weak in my heart.

It seems that the operation was successful, I am happy for him at the same time I am also depressed, if the person in front of me is the second personality of the old horse, then it means that the real old horse may disappear forever, then my father's matter is equivalent to starting from scratch.

After chatting for a while, Lao Ma went to the ward, and before he left, he also let me feel at ease for treatment, and left his mobile phone number for me, so that I could call him after I was discharged, and he would pick me up and wash the dust.

At this moment, I thought about seeing if there was any way to awaken his first personality after I was discharged from the hospital, but even if I did, would I really do it? Lao Ma is already so old, if he really awakens his first personality, it is estimated that he will be sent to a mental hospital by his family again, I can't do this kind of thing.

But he's my only clue, and if I hadn't done that, I'd never have known the truth about Daddy's madness. Looking at the back of the old horse about to walk out of the seriously ill area, I was a little overwhelmed, should I stop him and tell him the truth directly?

Just when I was hesitating, I suddenly saw that Lao Ma was holding the notebook that recorded the truth of his condition, I was shocked, how did he know that notebook, this notebook is only known to me and Lao Ma's first personality, is he the real Lao Ma?

I quickly called out to him, and when he heard it, he looked back at me, and I trotted over to pull him back to the ward, and I asked him, "Are you a real old horse?" ”

Lao Ma asked with some surprise: "Have you read this notebook?" ”

I nodded, and told him what happened after he left and my own inference, it stands to reason that after the brain tumor was removed, Lao Ma should have retained a second personality, how did he recover?

Lao Ma told me everything that happened, and I realized that it was far more complicated than I had judged, and could almost be described as bizarre.

Lao Ma was taken by the nurse to take a film that day, and then he was transferred to the Third Hospital for surgery. I thought it was a brain tumor removal operation, but what I didn't expect was that the old horse shook his head and said that it was not a tumor, but a shriveled left brain.

In the car accident five years ago, he saw that the left side of his brain looked like a shriveled walnut from an X-ray of his brain. At that time, the doctor told him that his atrophied left hemisphere was congenital, had developed abnormally for a period of time, and slowly atrophied, and eventually became a potential focus of epilepsy, and if he did not want to affect his later life, he had to have surgery.

Callotomy was currently the best treatment for epilepsy, so their treatment plan at the time was to cut off the connection between the left and right sides of the brain and isolate his broken left brain.

"The brain is originally one, so wouldn't it be a problem to cut off the connection between the left and right brains like this?" I interrupted him to ask.

Lao Ma said that he also had such doubts at the time, but the doctor told him: "Normally, the cerebral hemisphere that does not develop normally like this will not have any function, and all its functions are compensated by the right brain, so not only is there no problem in cutting off the corpus callosum, even if the entire left brain is removed, there is no problem, but there are exceptions to everything, and now it seems that the left brain still has some functions, and after three years of surgery, it has its own personality and indirect control over my right limb." ”

He said something a little complicated, so I asked him to stop for a while, and I figured out what he said first.

According to him, the old horse's necrotic left brain has developed an independent personality and can control the right side of his body from time to time. The notebook was written by his right hand while he was sleeping, so it can be inferred that the person who wrote the notes should be the personality of his left brain, and his left brain is the real old horse.

"So what kind of surgery did you have in the hospital this time?" I asked.

"Left brain extraction." The old horse said.

"And who the hell are you?"

"I'm an old horse, a real old horse." He said it very sincerely, but this is completely unreasonable, if the left brain is removed, it stands to reason that the real old horse has disappeared, then the person in front of me should still be the sick old horse, but how did he know the existence of this notebook?

Lao Ma saw my doubts and explained to me: "According to the general logical way of thinking, everyone will think that the necrotic left brain is me, including the doctor, and the result of the operation must be to remove the left brain, but the fact is that after the car accident, I am the healthy right brain." ”

I was completely stunned by him, who is who? Lao Ma didn't seem to bother to explain: "It's really hard to explain, but if I don't do this, I won't be able to remove the left brain." ”

"What's so hard about that?" Although I didn't quite understand why the right brain was him, I was not an idiot, and I said, "Since the right brain is you, why don't you just go to the hospital and sign for surgery?" ”

"How can it be as easy as you think, the left brain is already a sound personality, removing the left brain is equivalent to killing him, he will let me succeed so easily?"

I still couldn't quite understand his words, and Lao Ma said: "Let's tell you in a different way, you think about it from your side, I tell you now, you are actually a fantasy second personality, and I am going to remove your left brain now to make you disappear completely, what will you do?" ”

I hesitated, pondering his hypothesis. I was living a good life, and suddenly someone told me that I was a necrotic left-brain imaginary personality, and that they were going to remove me, and then I would not exist at all. In a sense, this is the equivalent of murder!

The old horse looked at my expression and said, "You understand now?" ”

I nodded, and he continued, "If he knew I was going to have surgery to remove him, he wouldn't have let me succeed, so I blinded everyone, including him, into thinking that he had a healthy right brain and that I was an atrophied left brain, so the operation went surprisingly well." ”

"So, you're a doctor now?" I asked.

Lao Ma smiled and said, "I guess I won't have a chance to wear that white coat again." ”

After I was convinced that he was an old horse, I asked him, "Do you remember a patient named So Kar-wai?" The old horse was stunned for a moment, and was surprised why I asked someone coldly.