Psychosis transition rates by those at clinical high risk have been highly variable and few studies have compared service presenters across the full psychosis risk spectrum with respect to medium-term outcomes. A 10-year service cohort was examined (N=1997), comprising all presentations to an early psychosis service for young people experiencing a recent psychotic episode or at increased risk ('Psychological Assistance Service', Newcastle, Australia). Baseline and longitudinal service data (median follow-up =7.
View Article and Find Full Text PDFBackground: Cognitive decline post-cardiac surgery is of clinical concern. To better understand it a sensitive and specific measure of post-surgery brain impairment is required. The cerebral territory most likely to be adversely affected by surgery is the posterior "watershed" territory.
View Article and Find Full Text PDFMothers with borderline personality disorder (BPD) have disturbed relationships with their infants, possibly associated with poor nonverbal cue perception. Individuals with BPD are poor at recognizing emotion in adults and tend to misattribute neutral (i.e.
View Article and Find Full Text PDFBackground: Despite strong research interest in psychosis risk identification and the potential for early intervention, few papers have sought to document the implementation and evaluation of specialised psychosis related services. Assessment of Ultra High Risk (UHR) has been given priority, but it is equally as important to identify appropriate comparison groups and other baseline differences. This largely descriptive service evaluation paper focuses on the 'baseline characteristics' of referred clients (i.
View Article and Find Full Text PDFPurpose: In clinical practice, it is often noted that some individuals struggle with chronic pain, while others find effective means to cope. The purpose of this study was to better understand how resilience fits into coping with persistent pain problems. Of interest was whether measures of resilience add to the prediction of adjustment to chronic pain over and above measures of pain coping as typically used with this patient group.
View Article and Find Full Text PDFClin Child Psychol Psychiatry
January 2015
Antenatal substance use and related psychosocial risk factors are known to increase the likelihood of child protection involvement; less is known about the predictive nature of maternal reflective functioning (RF) in this population. This preliminary study assessed psychosocial and psychological risk factors for a group of substance dependent women exposed to high risks in pregnancy, and their impact on child protection involvement. Pregnant women on opiate substitution treatment (n = 11) and a comparison group (n = 15) were recruited during their third trimester to complete measures of RF (Pregnancy Interview), childhood trauma, mental health and psychosocial assessments.
View Article and Find Full Text PDFUnlabelled: Loughland CM, Allen J, Gianacas L, Schofield PW, Lewin TJ, Hunter M, Carr VJ. Brief neuropsychological profiles in psychosis: a pilot study using the Audio Recorded Cognitive Screen (ARCS).
Objective: This pilot study examines the utility of a novel, standardised brief neuropsychological assessment tool (the ARCS, Audio Recorded Cognitive Screen) in a different clinical setting to that in which it was initially developed.
Utilizing the special advantages offered by the protracted maturation of neural circuits in chicken forebrain this study investigates the functional consequence of maturation using auditory evoked response potentials (AERPs) in behaving animals. Repeated measures AERP recordings were undertaken between weeks 1 and 8 posthatch. Quantitative analysis revealed a significant decrease in amplitude of the positive AERP component and a decrease in latency of the negative AERP component with maturation.
View Article and Find Full Text PDFThe double-hit hypothesis posits that an early life genetic or environmental insult sets up a neural predisposition to psychopathology, which may emerge in the presence of a subsequent insult, or 'second hit' in later life. The current study assessed the effect of neonatal lipopolysaccharide (LPS) exposure on anxiety-like behaviours in the adult Wistar rat. Rats were administered either LPS (Salmonella enterica, serotype enteritidis, 0.
View Article and Find Full Text PDFIn this sequel to our previous work [Rosso OA, Mendes A, Rostas JA, Hunter M, Moscato P. Distinguishing childhood absence epilepsy patients from controls by the analysis of their background brain electrical activity. J.
View Article and Find Full Text PDFSoc Psychiatry Psychiatr Epidemiol
December 2009
Background: Exposure to aggression and associated psychological outcomes are poorly characterised among carer-relatives of people with psychosis.
Method: Carer-relatives (N = 106) completed questionnaires assessing socio-demographics and perceived prevalence of aggression in their caring role in the last 12 months. Carers exposed to moderate-severe levels of aggression were re-approached to assess PTSD and coping strategies.
Background electroencephalography (EEG), recorded with scalp electrodes, in children with childhood absence epilepsy (CAE) and control individuals has been analyzed. We considered 5 CAE patients, all right-handed females and aged 6-8 years. The 15 control individuals had the same characteristics of the CAE ones, but presented a normal EEG.
View Article and Find Full Text PDFIt is convenient to divide the development of synaptic networks into two phases: synapse formation during which synaptic contacts are established, and a subsequent maturation phase during which synaptic circuits are fine tuned and the properties of individual synapses are modified. Understanding the complex factors that control the protracted maturation process in humans is likely to be important for understanding a variety of neurological and psychiatric disorders. Chickens provide an ideal experimental model in which maturation specific changes can be identified and the mechanisms controlling them can be elucidated because the maturation phase is protracted and temporally separated from the formation phase.
View Article and Find Full Text PDFBecause brain maturation in chickens is protracted and occurs well after the major developmental period of synaptogenesis, chicken forebrain is suitable to investigate whether the molecular mechanisms underlying memory consolidation are different in immature and mature animals. We have used antibodies and western blotting to analyze subcellular fractions from the intermediate medial mesopallium region of 14-day and 8-week chicken forebrain prepared 0, 45, and 120 min after learning a discriminative taste avoidance task. At both ages learning induced changes in the phosphorylation of the glutamate receptor subunit 1 at Ser831, the levels of calcium-calmodulin stimulated/dependent protein kinase II and the phosphorylation of calcium-calmodulin stimulated/dependent protein kinase II at Thr286 were observed only in the fraction enriched in post-synaptic densities.
View Article and Find Full Text PDFThe human visual system is able to extract an object from its surrounding using a number of cues. These include foreground/background gradients in disparity, motion, texture, colour, and luminance. We have investigated normal subjects' ability to detect objects defined by either motion, texture, or luminance gradients.
View Article and Find Full Text PDFNeurobiol Learn Mem
January 2003
The study of learning and memory using the chicken model has relied on three learning paradigms, passive avoidance learning, imprinting and the pebble floor task. Passive avoidance learning and imprinting have been used predominantly in very young chickens and cannot be used to access learning and memory in older chickens. We have established a new behavioural learning paradigm, Discriminative Taste Aversion Learning (DTAL), that can be used with both young and older animals.
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