week 4: psychology of hallucinations

  • auditory-nonverbal also occurs, but is much rarer

  • paranoia is associated with an insecure attachment and an institutional care home is an environment that very commonly induces this

  • from the dialogue between child and parents, the child develops the ability to regulate their behaviour, attention and speech

  • at approx age 2 the child discovers they can interrupt themselves, they speak to the person most important at the time, which is themselves

  • this theory says we are always bombarded with stimuli, we have to decipher which is which and pay attention to the most significant ones

  • source monitoring task: asked to name ‘vegetables beginning with c’, they do and then a week or so later they are presented a list of answers and they have to recall which ones they said, and separate from which ones were said to them

  • false alarms are what we’re interested in

  • perceptual sensitivity is how good your listening is

  • EEG studies have consistently shown that healthy individuals exhibit speaking induced suppression, which is the phenomenon that self-generated speech elicits a smaller neurophysiolofical response in the auditory context than the same sounds externally generated

  • PPs asked ot listen to syllables and at the same time imagine the same sound (match), a different one (mismatch) or nothing (passive)

    • HC reduced auditory N1 potential (index of auditory salience) in match condition

    • SZ-no hals showed reduced N1 potential in the