Thank you for using the timer!
We noticed you are actually not timing your practice. Click the START button first next time you use the timer.
There are many benefits to timing your practice, including:
Re: Scientific advances in the latter half of the twentieth [#permalink]
31 Jul 2012, 02:24
Even I've got the answer BCB, third one is wrong, I think following might be the explaination of third answer:
"hallucinogenic drugs other than LSD do not inhibit serotonin", So there are drugs which do not inhibit Sertonin and cause hallucinogenic effect. As per claim by Jacob , Serotonin must be 0 for dreaming. Again it is stated in the start of paragraph that "dreams and hallucinations share a common neurochemical mechanism". So, answer of third question is "D" instead of "B"