---Hallucinations can be present in healthy people, as well. They usually see hallucinations after or during grieving for a loved one who passed, commonly because of the change.

--- Having a self-generated stimulus should not be unexpected, but because of schizophrenia, there are a number of ways that one can provide their own stimulation.

---This is also part of the right anterior cingulate cortex, which is the part of the brain that is affected when going through hypnosis. This is affected because people can hallucinate under hypnosis, making it a very weird part of the brain that becomes unusually active during hypnosis.

---Another neurologist proposes that the brain creates hallucinations and that these experiences "arise from synchronization of gamma oscillations in thalamocortical networks."

--- While the above may not be clear, these gamma oscillations are the culprits restraining sensory input, and those with schizophrenia have damaged or physical change regarding these oscillations. Schizophrenia, in short, allows more sensory perception than we are trained to allow, making for surreal hallucinations.

---The visual cortex(s) have more than one pathway. There is the What Pathway, which focuses on recognizing and identifying objects or matter, and the Where Pathway, which involves the location and the movement of matter. These two lead to the processing of our brain.

---The primary visual cortex (V1), is the logical part of the brain, which shows the reaction of neurons to specific formations of light. The V2 cortex is much more detailed and focuses on contours, edges, textures, and the location of something compared to its foreground or background.

---These finished products of light get sent to the Inferior Temporal Cortex, which focuses on complete objects, the product of V1 and V2 in the brain which makes our brain make sense of things.

---Making our brain make sense of things does not mean it will be accurate, however. Looking at the image of the grid, square A isn't actually lighter than Square B. It is darker, but because our brains are not actually trying to seek the truth, they are making sense of it, is a much different way because we do not know what is real.

---Looking at the previous article, the brain gets all of the information from the eye, then we can make sense of it. Many people, do not have enough information about the lights from the eye that the brain adds things in, like previous information from, background knowledge. While many people affiliate visual hallucinations with schizophrenia and Charles Bonnet syndrome, it can occur in people who have young and healthy vision.

--- Previous information has led to the claim that some parts of the brain use different amounts of energy and take longer to shut off, making hallucinations from the visual cortex when inadequate light is given.

---Charles Bonnet syndrome is when people lose their eyesight or parts of their vision from things like macular degeneration, diabetic retinopathy, and so much more. This would mean that the brain is not receiving enough light, making it create things to therefore fill in the gap of light.

This is part of the right anterior cingulate cortex which is the part of the brain that controls hypnosis. They also arise from the occurrence of gamma oscillations at the same time through thalamocortical waves.

These oscillations, occurring at the same time, lessen the brain's range for sensory input, making it hallucinate more than it needs to. People with this Schizophrenia disease actually have abnormalities in the gamma oscillations.

Having these diseases is not the only way that people can hallucinate, they can also have a self-generated stimulus due to having more sensory input than needed.

There is also a flaw in our brain, as it does not seek the truth, but tries to make sense of it in any way possible, which leads to hallucinations or illusions.

The brain gets most of its information from the eye, and when the eye cannot deliver visual input, the brain has to resort to its own methods of ideas. We all affiliate visual defects with Charles Bonnet syndrome and schizophrenia, and while this may be true, this is not the only time our brains deceive us because of eye input. This can happen when we are tired, experiencing sensory things our brains cannot handle, and some things our visual cortex cannot handle. Charles Bonnet syndrome is the main cause though. It causes people to lose some of their vision which makes the brain create its own information, which causes hallucinations from past knowledge.