Your brain has no direct access to the outside world except via its sensors. it is dark, damp, and enclosed in bone for its own protection. All knowledge comes in via sensor channels, it has built twin detectors to front to sample ambient information bearing electromagnetic radiation and twin auditory receptors to side which sample information on pressure waves in the air. Add to that, the vast number of tactile sensors distributed throughout the body and the olefactory sensors in mouth, tongue and nasal passage. By such means, the brain gains information about the outside world. There are no hidden internal sense organs in a brain, apart from the pineal gland, perhaps, which long ago used to be a third eye mounted on top of the head, but has long been subsumed into the brain and now serves the lesser role of regulating sleep/wake cycles.
A pdf article (47 pages) about NDE 's in the blind.
https://digital.library.unt.edu/ark:/67531/metadc799333/m2/1/high_res_d/vol16-no2-101.pdfBy Kenneth Ring, Ph.D. Sharon Cooper, M.A. University of Connecticut
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This article reports the results of an investigation into near
death and out-of-body experiences in 31 blind respondents. The study sought
to address three main questions: (1) whether blind individuals have near
death experiences (NDEs) and, if so, whether they are the same as or dif
ferent from those of sighted persons; (2) whether blind persons ever claim
to see during NDEs and out-of-body experiences (OBEs); and (3) if such
claims are made, whether they can ever be corroborated by reference to in
dependent evidence.
Conclusion:
What seemed like an analog to physical sight really was not when examined closely. It is a dif
ferent type of awareness altogether, which we have called transcen
dental awareness, that functions independently of the brain but that
must necessarily be filtered through it and through the medium of
language as well. Thus, by the time these episodes come to our at
tention, they tend to speak in the language of vision, but the actual
experiences themselves seem to be something rather different alto
gether and are not easily captured in any language of ordinary dis
course.
What the blind experience is more astonishing than the claim that
they have seen. Instead, they, like sighted persons who have had
similar episodes, have transcended brain-based consciousness alto
gether and, because of that, their experiences beggar all description
or convenient labels. For these we need a new language altogether,
as we need new theories from a new kind of science even to begin
to comprehend them. Toward this end, the study of paradoxical and
utterly anomalous experiences plays a vital role in furnishing the
theorists of today the data they need to fashion the science of the
21st century. And that science of consciousness,... is surely already on the horizon.
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