Dim blue flashing lights in trance

[-asalantu-]

Such trance symptoms (flashing litghts) increase in intensity when I'm sad. ¿Can you explain that?

BTW, "flashing lights" and "swirling clouds" (typically reddish and sometimes reticular [ like net ] with vivid/high contrast yellow colour)
¿falls under "hypnagogic images" category?

My best regards,
Ángel