[babby]

That's interesting stuff.

I was also in a car accident and afterwards both he and I could recount each other's facial expressions (Though they could be imagined).

I just wonder whether it is memory fidelity increasing or if brain "performance" also grows.

[austinjp]

My understanding of the "time slowed down" phenomenon is that the recollection is more detailed due to the intensity of the experience. However this extraordinary detail is an illusion.

The recollection feels so detailed that, in retrospect, one feels that time must have been slowed down during the experience in order to absorb so much information.

It is the apparent intense detail that produces the subjective effect of time dilation. However the detail was not collected during the experience; it is conjured during "recollection".

These recollections are generally inaccurate. Almost saccade-style, the imagination fills in gaps. The recollected detail -- e.g. facial expressions during a car crash -- did not actually happen. They are imagined.

Eyewitness accounts of highly emotive events such as robberies or crashes are notoriously unreliable, yet the witnesses swear on their accuracy, and describe events in detail -- inaccurately.

On mobile, references tricky. Google eyewitness reliability for more.