My comments on the topic of the Yahoo article (linked below) :
The true nature of the phenomenon known as Deja Vu isn't quite
exactly as is commonly thought to be : often said to be the result
of misfiring of neurons in the brain, creating the false perception
of a time-lag or time-loop.
What has been called, Deja Vu, is actually several distinct
phenomena. What the Yahoo article visitors (posting comments below
the article) Shaun, HAPPY and patsy are describing, are mostly the
result of past life memories, or more rarely, memories of an
extraphysical being or entity or consciousness (or 'spirit' or
'ghost', but these terms are misleading), that is psychically
intruding or telepathically shared with the physical incarnate
person experiencing the phenomenon.
However, the actual phenomenon more correctly ascribed to Deja
Vu, is a far more striking one, in which everything about the
scene, including your own thoughts and feelings at that exact
moment, is exactly the same as you had experienced before, the
sensation being extremely distinct and strikingly unmistakable. It
is difficult (actually impossible) to explain the cause of this
phenomenon in limited human concepts and words, but suffice to say
it can be considered a manner or modality of the consciousness
time-travelling (not the physical body time-travelling, but rather
your consciousness, which works with but isn't limited to, your
physical brain). This is the actual Deja Vu phenomenon the Yahoo
article visitors t, Steve and AGR are describing.
Yahoo article on Deja Vu :
https://sg.news.yahoo.com/heres-whats-really-happening-d-000000240.html