#brain scans

F4 “Expert Classifier” • Categorize a person, place, thing, event or idea • Have a sense for how well a concept fits a particular category • Links two concepts together

--Source of description: https://medium.com/@jungian.typologic/the-brain-region-activations-5e83e6dfebbe

It is suggested that like F3, F4 is underutilized by most people. F4 becomes active when we classify and define concepts. INFJs probably use the F4 region on the center-left side near the front of the brain somewhat moderately relative to other types.

INFJs generally have a very good understanding of concepts and metaphors. They have a good sense for how well a concept fits a particular category. They are capable of understanding how two concepts may be linked together. They are good at categorizing a person, place, thing, event or idea. However, they are not great at it.

In MBTI terms, extroverted intuition (Ne) and extroverted thinking (Te) are particularly useful for coming up with metaphors and categorization respectively.

Extroverted intuition (Ne) is an INFJs fifth function. While INFJs understand figurative language well, they may not fixate to the same degree as someone with dominant Ne on coming up with original metaphors and subtle links between seemingly unrelated concepts. For example, they may be capable of understanding Shakespeare, but they don't think like Shakespeare.

F3 “Deductive Analyst”

• Make logical deductions

• Backtrack or correct your thinking due to a reasoning error

• Follow a chain of reasoning

--Source of description: https://medium.com/@jungian.typologic/the-brain-region-activations-5e83e6dfebbe

It is suggested that most people have less activity in this region relative to other regions. INFJs probably use the F3 region on the center-right side near the front of the brain much less relative to other personality types. While INFJs are capable of thinking in words or symbols while following a branching logical structure or chain of reasoning towards a conclusion, they are not as natural at doing so and sometimes need to be explicitly shown by others how to think this way.

In MBTI terms, types who use F3 to a high degree are probably those with higher extroverted thinking (Te). Generally, TJs are particularly good at deductive reasoning. STJs tend to go step-by-step and are able to easily backtrack and correct their thinking due to errors of reasoning. NTJs appear to incorporate more intuitive leaps while making logical deductions.

F8 “Grounded Believer” • Recall exact, literal details • Say a word or phrase with strong emphasis • Identity what we believe • Rate how much we like or dislike something • Ignore context

--Source of description: https://medium.com/@jungian.typologic/the-brain-region-activations-5e83e6dfebbe

INFJs probably use the F8 region on the right side near the front of the brain moderately relative to other personality types. While INFJs are capable of recalling exact literal details, putting emphasis on words or phrases, identifying what they believe, rating their likes and dislikes and ignoring context, they tend to do so in moderation.

In MBTI terms, INFJs have secondary extroverted feeling (Fe). They readily tune in to what others are feeling but tuning in to their own feelings and personal beliefs (Fi) requires more thought and introspection than what normally occurs on a subconscious level.

While INFJs are sometimes aware of personal likes and dislikes, it may take time (ie: self-interrogation, being required to write an essay on the topic) for their preferences to rise to the level of consciousness and to reach an understanding of the reasons why they have the preferences they do.

Usually, those with higher introverted feeling (Fi) are more immediately aware of their personal beliefs, likes, feelings; they tend to take compliments and insults much more personally. INFJs have a fairly strong filter and tend to take it less personally when their beliefs are challenged.

INFJs are capable of recalling exact, literal details, especially regarding people or things that are important to them. However, INFJs lean towards subjective and emotive memory and it requires a conscious effort for them to remember literal details (repeating them over and over to themselves, writing them down and reading over them repeatedly). Those with higher introverted sensing (Si) tend to be better at this type of recall.

SFJs who have higher extroverted feeling (Fe) and introverted sensing (Si) also seem to have a greater ability to verbally emote or express through speech what they believe is important - and in recalling literal details in support of their beliefs.

INFJs are generally capable of but require more effort to (a) become aware of what they believe and feel (b) recall literal details regarding what they think is important and (c) express their beliefs through speech.

F7 “Imaginative Mimic” • Infer based on context • Imagine another place or time • Mirror others’ behavior • Ask “maybe” and “what if” • Mentally play out a situation

--Source of description: https://medium.com/@jungian.typologic/the-brain-region-activations-5e83e6dfebbe

INFJs probably use the F7 region on the left side near the front of the brain less well relative to other personality types. While INFJs are capable of mirroring others' behaviour, inferring by context, mentally rehearsing, asking "what if" and playing out that scenario, I don’t think they are particularly natural at doing so.

In MBTI terms, probably those with higher extroverted intuition (Ne) are subconsciously playing out the most elaborate "what if" scenarios in their minds. Many science fiction writers have higher extroverted intuition. INFJs tend to have much less elaborate "what if" scenarios playing out in their minds and generally do not care as much as others regarding these types of things.

Those with higher extroverted intuition (Ne) also seem better at inferring based on context: figuring out what a teacher wants on a multiple choice test and giving them the answer they most expect; figuring out what a prospective employer wants to hear in response to a question in a job interview. INFJs tend to have more trouble figuring out expected answers in such situations.

Kinger said that when he was messing around in Caine’s code, he saw the folder of the brain scans. So that would mean that Caine still has copies of everyone’s original brain scans. So, theoretically, while he can’t bring people back from Abstraction, he could create a new copy of them. They wouldn’t remember anyone. It would be like they were entering the Circus for the first time. And there’s no guarantee they wouldn’t abstract again.

Would Pomni want to try to help a new Jax to open up to other people more?

Would Kinger want a new version of Queenie? She wouldn’t be his wife, but technically neither was the first Queenie.

Fp2 “Process Manager” • Notice where you are in a task • Perceive that you are done • Consider a new or unpleasant idea Broadly, tracks whether we are at the beginning, middle, or end of a task. Helps regulate our emotions while processing negative, depressing or disruptive data.

-- Source of description: https://medium.com/@jungian.typologic/the-brain-region-activations-5e83e6dfebbe

INFJs probably use the Fp2 region at the front right of the brain very well relative to other personality types. Process is fundamental to how INFJs think and interact with the world. Tasks that involve process are generally less stressful.

As a result, INFJs often engage in activities and work that are process-oriented. From refining the process in a recipe or a chemistry experiment to organizing the management systems of a company to make it run more efficiently, INFJs naturally fixate on making tasks and systems work better. A bit perfectionistic, INFJs may be put off by inefficient process in management systems.

INFJs are also good at staying open and considering new or unpleasant ideas. They may take in a lot of new ideas, including very negative ones without getting easily overwhelmed. However, they are not immune to becoming overwhelmed at some point. For example, considering too many new ideas without having the resources (time, wellness, experience, mental capacity, education level, etc.) to properly process what they think about those ideas may become stressful.

Fp1 “Chief Judge”

• Provide a reason

• Decide between options

• Detect an error

Helps us decide quickly and explain our reasoning. Helps us ignore unwanted, negative ideas and feedback.

-- Source of description: https://medium.com/@jungian.typologic/the-brain-region-activations-5e83e6dfebbe

INFJs probably use the Fp1 region at the front left of the brain much less well relative to other personality types. While INFJs are capable of making decisions, providing reasons for decisions, deciding between options, detecting errors, I don't think they are particularly good at doing so under stress (or at a rapid pace and at a high volume for a prolonged period of time with limited resources).

If INFJs have to decide very quickly, decide between many options, explain their complex reasoning for a decision, detect a lot of errors, and ignore a lot of negativity while doing so, they are likely to become overwhelmed or pressured rather quickly compared with those with a very strong executive ability. Overuse of this region sounds particularly exhausting.

Screen shot source: https://medium.com/@jungian.typologic/the-brain-region-activations-5e83e6dfebbe

In a previous post, I listed which brain regions I think INFJs use to a high degree. I suggested that INFJs have a strong back right bias.

Here are regions I think INFJs underuse.

While I can’t be sure without an actual scan, I have an idea that INFJs don't use these regions so much:

Fp1

F3

F7

FC

C3

P3

T3

T5

And I think that they use these regions somewhat moderately:

F4

F8

FC6

C4