Sometimes I get this question from patients’ family, asking why the patient is hearing voices, how did it happen and what else do we know about these voices.
Here I’m referring to auditory hallucination commonly seen in people suffering from schizophrenia and psychotic disorders.
Yes they hear voices in their head, usually talking to them, quite commonly saying harsh and mean things to the sufferer. Sometimes they hear a few different voices having a conversation, and it’s not difficult to guess, the conversation is about the sufferer.
“Look! She has no friend! She looks so ugly and stupid!”
“Indeed. I wouldn’t want to befriend someone like her.”
“She should just kill herself. Nobody likes her anyway. Why is she still living?”
I mean, who with a sane mind would say such things to others? Nobody. How was these produced?
In 1993, McGuire and Murray published a research article “Increased blood flow in Broca’s area during auditory hallucinations in schizophrenia“. Let me break it down a little for you… The functions of Broca’s area has a lot to do with “speech production”. As compared to another area of the brain, the Wernicke’s area, is responsible for the comprehension of speech.
So what does this mean?
When the patients are hearing voices, which do not sound like their own voices, the “speech production” area of the brain has increased blood flow, less so in the “speech comprehension” area. We can’t conclude anything from here obviously, but it becomes clearer to the researchers that those voices are produced by the brain itself, almost like their own’s thought processes (which we all do: talking to ourselves or having inner talks), but “presented” as somebody else’s voice.
So it seems likely that it’s their own thoughts. At least that’s what research has found. And I believe many clinicians would agree with me — often we see those voices are actually the patients’ core beliefs, worries, and are what they were told (by their parents, significant family members, teachers etc) when they were much younger. As a therapist, when I look at it this way, it opens up a lot more possibilities to help people who are suffering from auditory hallucination. And indeed, quite a number of techniques in mindfulness-based approach and cognitive therapy have been found useful.