Ratcliffe M, Wilkinson S, ’How anxiety induces verbal hallucinations’, http://www.ncbi.nlm.nih.gov/pubmed/26683229, National Center for Biotechnology Information, Elsevier Inc. (2015 Dec 9).

Anxiety

Verbal hallucinations are often associated with pronounced feelings of anxiety. (…) We show how anxious anticipation of one’s own thought contents can generate an experience of their being ‘alien’.