Executive Summary BackgroundThis Commission addresses several priority areas for psychiatry over the next decade, and into the 21st century. These represent challenges and opportunities for the profession to sustain and develop itself to secure the best possible future for the millions of people worldwide who will face life with mental illness. Part 1: The patient and treatmentWho will psychiatrists help? The patient population of the future will reflect general demographic shifts towards older, more urban, and migrant populations. While technical advances such as the development of biomarkers will potentially alter diagnosis and treatment, and digital tech-nology will facilitate assessment of remote populations, the human elements of practice such as cultural sensitivity and the ability to form a strong therapeutic alliance with the patient will remain central. Part 2: Psychiatry and health-care systemsDelivering mental health services to those who need them will require reform of the traditional structure of services. Few existing models have evidence of clinical effectiveness and acceptability to service users. Services of the future should consider stepped care, increased use of multidisciplinary teamwork, more of a public health approach, and the integration of mental and physical health care. These services will need to fit into the cultural and economic framework of a diverse range of settings in high-income, low-income, and middle-income countries. Part 3: Psychiatry and societyIncreased emphasis on social interventions and engagement with societal expectations might be an important a ea fo ps hiat s de elop e t. This ould e o pass ad o a fo the ights of individuals living with mental illnesses, political involvement concerning the social risk factors for mental illness, and, on a smaller scale, work with families and local social networks and communities. Psychiatrists should therefore possess communication skills and knowledge of the social sciences as well as the basic biological sciences. Part 4: The future of mental health lawMental health law worldwide tends to be based on concerns about risk rather than the protection of the rights of individuals experiencing mental illness. The United Nations Convention on the Rights of Persons with Disabilities, which states that compulsion based in whole or in part on mental disability is discriminatory, is a landmark document that should inform the future formulation and reform of mental health laws. An evidence-based approach needs to be taken: mental health legislation should mandate mental health training for all health professionals; ensure access to good-quality care; and cover wider societal issues, particularly access to housing, resources, and employment. All governments should include a mental health impact assessment when drafting relevant legislation. Part 5: Digital psychiatry-enhancing the future of mental healthDigital technology might offer psychiatry the potential for radical change in terms of service delivery and the development of new treatm...

No abstract

To better understand visual processing abnormalities in autism we studied the attention orienting related frontal event potentials (ERP) and the sustained attention related centro-parietal ERPs in a three stimulus oddball experiment. The three stimulus oddball paradigm was aimed to test the hypothesis that individuals with autism abnormally orient their attention to novel distracters as compared to controls. A dense-array 128 channel EGI electroencephalographic (EEG) system was used on 11 high-functioning children and young adults with autism spectrum disorder (ASD) and 11 age-matched, typically developing control subjects. Patients with ASD showed slower reaction times but did not differ in response accuracy. At the anterior (frontal) topography the ASD group showed significantly higher amplitudes and longer latencies of early ERP components (e.g., P100, N100) to novel distracter stimuli in both hemispheres. The ASD group also showed prolonged latencies of late ERP components (e.g., P2a, N200, P3a) to novel distracter stimuli in both hemispheres. However, differences were more profound in the right hemisphere for both early and late ERP components. Our results indicate augmented and prolonged early frontal potentials and a delayed P3a component to novel stimuli, which suggest low selectivity in pre-processing and later-stage under-activation of integrative regions in the prefrontal cortices. Also, at the posterior (centro-parietal) topography the ASD group showed significantly prolonged N100 latencies and reduced amplitudes of the N2b component to target stimuli. In addition, the latency of the P3b component was prolonged to novel distracters in the ASD group. In general, the autistic group showed prolonged latencies to novel stimuli especially in the right hemisphere. These results suggest that individuals with autism over-process information needed for the successful differentiation of target and novel stimuli. We propose the potential application of ERP evaluations in a novelty task as outcome measurements in the biobehavioral treatment (e.g., EEG biofeedback, TMS) of autism.

Individuals with autism spectrum disorder (ASD) have previously been shown to have significantly augmented and prolonged event-related potentials (ERP) to irrelevant visual stimuli compared to controls at both early and later stages (e.g., N200, P300) of visual processing and evidence of an overall lack of stimulus discrimination. Abnormally large and indiscriminative cortical responses to sensory stimuli may reflect cortical inhibitory deficits and a disruption in the excitation/inhibition ratio. Low-frequency (≤1HZ) repetitive transcranial magnetic stimulation (rTMS) has been shown to increase inhibition of stimulated cortex by the activation of inhibitory circuits. It was our prediction that after 12 sessions of low-frequency rTMS applied bilaterally to the dorsolateral prefrontal cortices in individuals with ASD there would be a significant improvement in ERP indices of selective attention evoked at later (i.e., 200–600 ms) stages of attentional processing as well as an improvement in motor response error rate. We assessed 25 participants with ASD in a task of selective attention using illusory figures before and after 12 sessions of rTMS in a controlled design where a waiting-list group of 20 children with ASD performed the same task twice. We found a significant improvement in both N200 and P300 components as a result of rTMS as well as a significant reduction in response errors. We also found significant reductions in both repetitive behavior and irritability according to clinical behavioral questionnaires as a result of rTMS. We propose that rTMS has the potential to become an important therapeutic tool in ASD research and treatment.

In our previous study on individuals with autism spectrum disorder (ASD) (Sokhadze et al., Appl Psychophysiol Biofeedback 34:37–51, 2009a) we reported abnormalities in the attention-orienting frontal event-related potentials (ERP) and the sustained-attention centro-parietal ERPs in a visual oddball experiment. These results suggest that individuals with autism over-process information needed for the successful differentiation of target and novel stimuli. In the present study we examine the effects of low-frequency, repetitive Transcranial Magnetic Stimulation (rTMS) on novelty processing as well as behavior and social functioning in 13 individuals with ASD. Our hypothesis was that low-frequency rTMS application to dorsolateral prefrontal cortex (DLFPC) would result in an alteration of the cortical excitatory/inhibitory balance through the activation of inhibitory GABAergic double bouquet interneurons. We expected to find post-TMS differences in amplitude and latency of early and late ERP components. The results of our current study validate the use of low-frequency rTMS as a modulatory tool that altered the disrupted ratio of cortical excitation to inhibition in autism. After rTMS the parieto-occipital P50 amplitude decreased to novel distracters but not to targets; also the amplitude and latency to targets increased for the frontal P50 while decreasing to non-target stimuli. Low-frequency rTMS minimized early cortical responses to irrelevant stimuli and increased responses to relevant stimuli. Improved selectivity in early cortical responses lead to better stimulus differentiation at later-stage responses as was made evident by our P3b and P3a component findings. These results indicate a significant change in early, middle-latency and late ERP components at the frontal, centro-parietal, and parieto-occipital regions of interest in response to target and distracter stimuli as a result of rTMS treatment. Overall, our preliminary results show that rTMS may prove to be an important research tool or treatment modality in addressing the stimulus hypersensitivity characteristic of autism spectrum disorders.