But for the comparison between PHA and functional amnesia to be most meaningful, we need to know that they share underlying processes. One way to test this is to identify the brain activity patterns associated with PHA. In a groundbreaking study published in Neuron, neuroscientist Avi Mendelsohn and colleagues at the Weizmann Institute in Israel did just that using functional magnetic resonance imaging (fMRI). They carefully selected 25 people to participate in their experiment. Although all were susceptible to hypnosis, earlier testing had shown that half could respond to a PHA suggestion (labelled “the PHA group”) and half could not (the “non-PHA group”). In the Study session of their experiment, participants watched a 45-minute movie. One week later, in the Test session, participants returned to the laboratory and were hypnotized while they lay within the fMRI scanner. During hypnosis, people in both the PHA and non-PHA groups received a suggestion to forget the movie until they heard a specific cancellation cue.
Hypnosis is a wellness technique that works by promoting positive behavioral or cognitive changes. During successful hypnosis, the client should be eased into a state of deep relaxation in which the conscious mind takes a back seat and the subconscious mind becomes more active. The client is often able to let go of critical thoughts and become receptive to the therapist’s suggestions. In this state of hypnosis, motivating suggestions can bypass your usual mental resistance and internal defense mechanisms. For example, even if you want to quit overeating cupcakes, you may have some level of resistance that your rational mind can’t overcome. During hypnosis, the positive suggestions made by the hypnotherapist can bypass your usual blocks, helping you to achieve the formerly unachievable: stopping overeating, quitting smoking, mastering public speaking, or losing your fear of heights. The goal of hypnosis is to strengthen and empower the client’s motivation, commitment and focus. Consider working with someone who is not just trained in hypnosis but also is a licensed therapist or psychotherapist who can bring their academic background into your session.
Hypnosis is not a psychotherapeutic treatment or a form of psychotherapy, but rather a tool or procedure that helps facilitate various types of therapies and medical or psychological treatments. Only trained health care providers certified in clinical hypnosis can decide, with their patient, if hypnosis should be used along with other treatments. As with psychotherapy, the length of hypnosis treatment varies, depending on the complexity of the problem.