Here is an interesting report:

"Brain function, as measured on the Electroencephalogram, "appears to be reliably present in the fetus at about eight weeks gestation," or six weeks after conception. J. Goldenring, "Development of the Fetal Brain," New England Jour. of Med., Aug. 26, 1982, p. 564"

Who once claimed that there can be no thought, no experience, without the brain? Does it follow that when one does have a brain that there is thought and experience?