Papers by Graham Jamieson
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日本機械学会ロボティクス・メカトロニクス講演会講演論文集, 1998
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Frontiers in Human Neuroscience, 2022
Depersonalization (DP) and derealization (DR) refer to states of dissociation in which one feels ... more Depersonalization (DP) and derealization (DR) refer to states of dissociation in which one feels a sense of alienation in relation to one’s self and environment, respectively. Whilst transient episodes often diminish without treatment, chronic experiences of DP and DR may last for years, with common treatments lacking a strong evidence base for their efficacy. We propose a theoretical explanation of DP and DR based on interoceptive predictive coding, and discuss how transient experiences of DP and DR may be induced in the non-clinical population using virtual reality. Further, we review the use of heartbeat evoked potentials in detecting the neural correlates of DP and DR allowing for an objective measure of these experiences in the non-clinical population. Finally, we discuss how the induction and detection of transient experiences of DP and DR in the non-clinical population could shed light on how the brain constructs one’s sense of self and reality.
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In this article, in-depth examination of a number of cases in eating behaviours and hypnotisabili... more In this article, in-depth examination of a number of cases in eating behaviours and hypnotisability has been undertaken to emphasise the complexity of some of the issues involved in self-defeating eating. These case studies further highlight the fact that no single measure, used in isolation, can accurately reflect the complex attitudes and capacities which are currently under scrutiny and that measurement of eating pathology is not a straightforward matter. The analysis reveals an emergent emphasis on those factors which indicate possible differences in self-perception in relation to controland regulation of the self.
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The neuroscience of brain systems provides important tools for understanding the states of consci... more The neuroscience of brain systems provides important tools for understanding the states of consciousness which are the aim of traditional meditation practices. In the last decade a range of Buddhist practices (particularly mindfulness) have been closely examined (predominantly with brain imaging methods. By contrast I will present recent findings from an Australian study of Yoga meditation practices using the EEG to study oscillatory activity in the cortex of advanced (30 years) and intermediate (4 years) of practitioners in a single tradition. The aim was to examine how the effects of this training unfold from the medium to the long term in the organisation of brain dynamics. Results distinguish two fundamental steps in this development. Firstly a reduction or inhibition of motor, somatosensory and exteroceptive processing mediated by low frequencies but particularly the alpha rhythm. Secondly the emergence of an astonishing level synchronised high frequency activity (predominantly...
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Australian Journal of Clinical and Experimental Hypnosis
This paper examines hypnosis in relation to the neuroscience cognitive and affective control. It ... more This paper examines hypnosis in relation to the neuroscience cognitive and affective control. It is proposed that hypnotic phenomena are rooted in evolution and thus biologically based. Animal hypnosis is considered to confer important advantages in natural selection which have been preserved and extended in the development of the human brain. Two influential models in the neuroscience of cognitive control are described and evidence for brain structures implementing conflict monitoring and cognitive control is reviewed. The neural basis of affective control is then examined in relation to cognitive control. Dorsal anterior cingulate cortex (dACC) is proposed as a common cognitive and affective monitoring mechanism. Ventrolateral prefrontal cortex (vlPFC) is proposed as monitoring stimulus salience whereas the medial prefrontal cortex (mPFC) was involved in the monitoring of affective conflict. The dorsolateral prefrontal cortex (dlPFC) is implicated in resolution of cognitive confli...
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The relationship between the states of awareness that emerge in hypnosis and meditation or even b... more The relationship between the states of awareness that emerge in hypnosis and meditation or even between different meditation practices is of fundamental importance to understanding the range of potentials open to human consciousness. The recent emergence of cognitive neuroscience provides a powerful set of tools for researchers of human conscious states to probe not only their effects but the underlying causal dynamics of their operation. Within cognitive neuroscience the Bayesian framework of predictive coding has generated deep insights into the fundamental unity of the ordinary psychological processes of perception, learning, attention, memory and action. In what follows key concepts from predictive coding, active inference, generative models and interoceptive predictive coding are applied to our understanding of hypnosis and meditation states to provide a unified theory of these diverse states with clear implications for researchers and clinicians alike.
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Proceedings of the National Academy of Sciences, 2021
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We test the proposal that changes in topographic patterns of cortical oscillations in the upper-a... more We test the proposal that changes in topographic patterns of cortical oscillations in the upper-alpha (10-12Hz) band selectively inhibit the recall of specific memories during hypnotic amnesia by blocking the availability of locally processed information at specific points in the retrieval process. Participants pre-screened for high or low hypnotic susceptibility received a suggestion for amnesia for faces. For old faces wrongly identified compared to new faces correctly identified evoked upper alpha (908 ms post stimulus) is significantly higher in ‘old wrong’ in right BA7 in a region implicated in top-down executive control to assist recall of visual information. Lagged nonlinear connectivity between cortical sources in upper-alpha in the same condition showed significantly increased connectivity between right BA34 (parahippocampal gyrus) and right BA 7, 20 and 22. During amnesia response spatial and temporal coordination of upper-alpha appears to suppress the integrated functioning of these regions (and hence recall). These patterns were not found after reversal of the amnesia suggestion.
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Journal of Child Sexual Abuse, 2021
This Australian study explores a person's self-reported exposure to childhood abuse to identi... more This Australian study explores a person's self-reported exposure to childhood abuse to identify the characteristics that are predictive of clinical levels of dissociation in adulthood. The final sample comprised 303 participants, including 26 inpatients and outpatients (24 females and two males) receiving treatment for a dissociative disorder (DD), and 277 university participants, including 220 controls (186 females, 34 males), 31 with elevated levels of dissociation consistent with a DD or posttraumatic stress disorder (27 females and four males), and 26 with clinical levels of dissociation (20 females and six males). The findings demonstrate clinical levels of dissociation and DDs occur in individuals reporting a history of childhood abuse, particularly sexual abuse and experiences that are potentially life-threatening to a child, such as choking, smothering, and physical injury that breaks bones or teeth, or that compromise the child's survival needs, including threats of abandonment and deprivation of basic needs. Females who disclosed being sexual abused in addition to being choked or smothered had a 106-fold risk of clinical levels of dissociation. As expected, self-reported amnesia was prevalent in the dissociative groups. Yet, even in the control group, one-third of those disclosing sexual abuse reported an unclear memory of it. Strong similarities in abuse experiences were found between the clinical sample and those in the university sample with clinical levels of dissociation (which is unlikely to have previously been diagnosed). The dissociative groups reported higher rates of corroboration of their abusive experiences. The findings support the traumatic etiology of dissociation.
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Journal of Trauma & Dissociation, 2020
This paper investigated a 60-item version of the Multidimensional Inventory of Dissociation (MID)... more This paper investigated a 60-item version of the Multidimensional Inventory of Dissociation (MID) with the potential to capture the full range of dissociative symptoms that characterize each of the dissociative disorders (DD). The 28-item Dissociative Experiences Scale (DES) was designed to capture a wide range of dissociative phenomena, but college population studies indicate it may not be adept at identifying the full range of dissociative symptoms and disorders. The 218-item MID has the advantage of capturing the full range of dissociative symptoms and has diagnostic capabilities for all DSM-5 DD, but the disadvantage of taking considerably longer than the DES to complete. Using university students and staff (N = 313), this paper investigated a 60-item version of the MID with the potential to capture the full range of dissociative symptoms that characterize each of the DD. Results indicate the MID-60 has a nearly identical factor structure to the full MID, excellent internal reli...
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Journal of Trauma & Dissociation, 2019
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Neuroscience of Consciousness, 2017
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Neuroscience of Consciousness, 2017
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Australian Journal of Clinical and Experimental Hypnosis, 2005
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Papers by Graham Jamieson