Two different pathophysiological mechanisms to explain the phenomenology of the visual hallucinations as a result of a wide variety of conditions have been proposed. Visual hallucinations in the context of visual sensory deprivation, migraine and epilepsy seem to be caused by direct excitation of the visual cortex or by de-afferentiation.
Roughly 2 hours and 42 minutes: Titanic struck the iceberg at 11:40pm on the 14th April and sank at 2:20am the next day. When the Titanic hit the iceberg the bottom four floors started flooding and it kept on going until the whole ship split in half and sunk to the bottom of the sea where it split once more into three pieces when it hit the bottom.
RMS Titanic leaving Belfast for her sea trials on 2 April 1912. Titanic ' s sea trials began at 6 a.m. on Tuesday, 2 April 1912, just two days after her fitting out was finished and eight days before she was due to leave Southampton on her maiden voyage.