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low level visual anomalies - its active/nearby major visual anomalies, no auditory anomalies - don't turn around auditory humming - you're looking at it from a distance flickering - its very close loud auditory hallucination - its very close and you're looking at it major visual deterioration - you're about to die auditory "roaring" - you're about to die major visual deterioration, loud auditory hallucination, visual input ends - you're gone