A new study has shown that:
…after mice formed a memory in a context, the engram cells encoding that memory in a brain region called the hippocampus would temporarily become much more electrically excitable if the mice were placed back in the same context again. ( How returning to a prior context briefly heightens memory recall)
The study is here: Engram Cell Excitability State Determines the Efficacy of Memory Retrieval
I do not believe it is much of a stretch to suppose that something similar happens with humans in virtually any significant context.
Since humans are social animals that respond to signals from other humans and since we often base our understanding of our social contexts on signals from other humans, it follows that strongly-perceived signals coming from others will cause “engram cells…in the hippocampus…to become electrically excitable.”
An “electrically excitable” hippocampus probably corresponds to what we have called a “jangle” in FIML practice. A jangle is the sensation that a psychological response may be or is initiating. It is the subjectively-felt onset in the mind of a “psychological morpheme.”
An instance of FIML practice is properly begun as soon as a significant “electrically excitable” response is first perceived. But before we “get reminded of details of some specific events” (Ibid) that originally produced that response.
Professor Tonegawa’s full statement on this is:
This initial recall could be a general recall of the vacation. But moments later, you may get reminded of details of some specific events or situations that took place during the vacation which you had not been thinking about.
By beginning a FIML query as soon after a jangle is perceived, any unwanted “context” that lies deeper in the brain is not recalled. Instead, the immediate basis of that context (the percepta that initiated the jangle) is isolated and analyzed.
See this for more: Disruption of neurotic response in FIML practice.
In Buddhist practice, a jangle is the second skandha. The five skandhas are form, sensation, perception, activity, consciousness. In modern terms, form might be better called “percepta.” In this context, a form/percepta is anything that enters working memory or consciousness.
For Buddhists, FIML can be understood as a mindfulness partnership where partners help each other with the five skandhas. By disrupting the normal or habitual unfolding of the five skandhas at the second skandha, FIML partners learn how to eliminate mistaken or unwanted responses when they first arise as jangles but before they become full blown psychological contexts.