Brain scans can be used to distinguish between Host and Alter personalities. The host often shows higher EEG coherence than alter personalities. This difference provides objective evidence that there is different neuronal activity between host and alter personalities.
What can a brain scan tell about your personality? A Brain Scan Can Tell A Lot About Your Personality And Intelligence; It’s As Unique As Fingerprint. “In the future, WIRED could put job applicants in an MRI scanner and look at their functional connections and determine if they’re going to be good writers,” Todd Constable, another author of the study, told WIRED.
Can a brain scan reveal how smart you are? Soon, scientists may be able to scan your brain to discover your level of intelligence — and get a better picture of you as a unique individual, according to new research out of Yale.
What is the difference between a host and an alter personality? The other personalities, besides the host, are known as alter personalities, or just “alters”.  The host may or may not be the original personality, which is the personality a person is born with.   Additionally, the host may or may not be the personality that coincides with the official legal name of the person. 
How do different alters differ in neuroimaging results? Different alters have shown different results in neuroimaging tests, including functional magnetic resonance imaging activation, and brain activation and regional blood flow and differences in PET scans.
What can a brain scan tell about your personality?
What can a brain scan tell you about your intelligence? Scientists at Yale found that brain scans could tell a lot more about a person than initially believed. CC BY 2.0 Soon, scientists may be able to scan your brain to discover your level of intelligence — and get a better picture of you as a unique individual, according to new research out of Yale.
Is your brain activity as unique as your fingerprint? Publishing a study in Nature Neuroscience, the researchers found that a person’s brain activity can be as unique as their fingerprint, offering clues about individual brain connectivity. In the study, the researchers gathered fMRI data from 126 participants, having them undergo six scan sessions over the course of two days.
Can a brain scan diagnose psychiatric symptoms? Brain imaging can also rule out a direct physical cause (like a tumor or a brain bleed) of psychiatric symptoms. While science hasn’t enabled brain-based diagnosis in psychiatry, the “old fashioned” approach—talking with a mental health professional—still works. And good news: It’s thousands of dollars cheaper than having a brain scan.
How does your brain connect to your personality? Amazingly, gathering data on how the brain regions connected gave the scientists the ability to predict how the participants would perform on tasks — ultimately giving them a picture of their unique intelligence and personality. The stronger these connections are between brain regions, generally speaking, the smarter the person is.