As far as I know there is only one neuroscientist who has written about Turmp’s dementia. This is Bobby Azarian, a neuroscientist on the faculty of George Mason University, who wrote the following in March:

A neuroscientist reveals how Trump and Biden’s cognitive impairments are different.

Excerpts:

As a neuroscientist myself, the question I’m mulling is whether Trump’s suspected brain damage is only in the area associated with speech production, known as Broca’s area, or also in the region associated with language comprehension, known as Wernicke’s area. The kind of paraphasia Trump is demonstrating, which does not involve a nonsensical pattern of words, is more likely to be a problem related to speech production, which is a less serious cognitive impairment. 

The Trump-related gaffes that are much more concerning to me involve Trump confusing one person for another, in a way that is not just the result of a name slip, but an actual confusion of one person for another.

However, as I wrote the other day, there is a wall keeping MAGA world from learning about this.

In order to reach MAGA world someone with serious credentials in dementia must go on Watters’ World, the most popular evening Fox News show. It can’t be just any mental health professional. It needs to be a neuroscientist and specialist in behavior neurology:

Behavioral neurology is a subspecialty of neurology that studies the impact of neurological damage and disease upon behavior, memory, and cognition, and the treatment thereof. Two fields associated with behavioral neurology are neuropsychiatry and neuropsychology.

Wikipedia

It would be best if their specialty is dementia and that they are eminent specialists athough other specialists (like those on this list from the Alzheimer’s Association) would suffice.

The specialists listed below can evaluate memory and thinking issues and diagnose dementia. Some people with unclear symptoms, including those under age 65, may require evaluation by two or more specialists who combine their findings to reach a diagnosis.

• Neurologist, who specializes in diseases of the brain and nervous system.
• Psychiatrist, who are trained in general psychiatry with additional training
  in mental health and aging.
• Psychologist, who has special training in testing to assess thinking abilities,
  including memory, attention, language, reading and problem-solving skills.
• Geriatrician, who specializes in the care of older adults and dementia.

When Jessie Watters can’t attack the argument he attacks the person making the argument. For example DeVega has interviewed clinical psychologist Dr. John Gartner about Trump’s dementia numerous times but as well-informed as he is about it he’s not a dementia expert, and even in the column where I am quoted (Clinical social worker: “With the Trump Bible, one must consider dementia”) there are no other mental health professionals quoted and I’m a clinical social worker, not an expert in dementia.

I have a hunch about the reasons we haven’t seen any neurologists who specialize in dementia go public about Trump in the mainstream media and we have seen quite a few mental health professionals do so is that the former are reticent about taking a public political position. This may be in part because they are concerned that their MAGA patients would resent this. It also may be due to the fact that the institutions where they work has a policy against this. It is also possible that considering the audience they have a legitimate concern that some viewers might want to get vengenge by harassing them. They might give bad ratings on doctor rating websites. In the later regard perhaps it would be better to have someone who is retired.

Mental health professionals typically are uninhibited when it comes to going public with political opinions and they are members of one of the most liberal profressions (see entire list).

Still, if you expand the section for physicians from the above website you see that neurologists lean Democratic:

My conclusion is that there are many experts in dementia who look at Trump and see the same signs mental health experts have gone public about but because of their own personalities and other factors they don’t want to come out and make this public.

Somewhere there has to be a gutsy expert in neurology will to not only go public about what they see in Trump’s that suggests he has dementia like Bobby Azarian has, but go public where residents of MAGA-world will hear it. If this means the Watters’ World, all the better. It would be diffcult for Watters to attack them for not having the expertise to recognize dementia when they see it repeatedly in Trump’s behavior.

Watters would attack them for not having examined Trump in person. This can be explained by pointing out that the diagnosis of dementia can be made by other forms of observations besides a face-to-face assessment and that in many case this isn’t sufficient since during an interview, especially of someone in the early stage, you don’t see signs. This is why family members are interviewed whenever possible.