Part 3/11:
She explained that under certain conditions—like being sleepy, in low light, or experiencing grief—people’s brains could interpret ambiguous stimuli as ghostly figures. For example, someone who has recently lost a loved one might find themselves thinking about them frequently, which can create perceptions of their presence. Sleep deprivation, in particular, can heighten these tendencies, making individuals more prone to hallucinations or vivid illusions.