Adaptive map alignment in the superior colliculus of the barn owl: a neuromorphic implementation

Adaptation is one of the basic phenomena of biology, while adaptability is an important feature for neural network. Young barn owl can well adapt its visual and auditory integration to the environmental change, such as prism wearing. At first, a mathematical model is introduced by the related study in biological experiment. The model well explained the mechanism of the sensory map realignment through axongenesis and synaptogenesis. Simulation results of this model are consistent with the biological data. Thereafter, to test the model’s application in hardware, the model is implemented into a robot. Visual and auditory signals are acquired by the sensors of the robot and transferred back to PC through bluetooth. Results of the robot experiment are presented, which shows the SC model allowing the robot to adjust visual and auditory integration to counteract the effects of a prism. Finally, based on the model, a silicon Superior Colliculus is designed in VLSI circuit and fabricated. Performance of the fabricated chip has shown the synaptogenesis and axogenesis can be emulated in VLSI circuit. The circuit of neural model provides a new method to update signals and reconfigure the switch network (the chip has an automatic reconfigurable network which is used to correct the disparity between signals). The chip is also the first Superior Colliculus VLSI circuit to emulate the sensory map realignment

The Default Mode Network Supports Episodic Memory in Cognitively Unimpaired Elderly Individuals: Different Contributions to Immediate Recall and Delayed Recall

While the neural correlates of age-related decline in episodic memory have been the subject of much interest, the spontaneous functional architecture of the brain for various memory processes in elderly adults, such as immediate recall (IR) and delayed recall (DR), remains unclear. The present study thus examined the neural correlates of age-related decline of various memory processes. A total of 66 cognitively normal older adults (aged 60-80 years) participated in this study. Memory processes were measured using the Auditory Verbal Learning Test as well as resting-state brain images, which were analyzed using both regional homogeneity (ReHo) and correlation-based functional connectivity (FC) approaches. We found that both IR and DR were significantly correlated with the ReHo of these critical regions, all within the default mode network (DMN), including the parahippocampal gyrus, posterior cingulate cortex/precuneus, inferior parietal lobule, and medial prefrontal cortex. In addition, DR was also related to the FC between these DMN regions. These results suggest that the DMN plays different roles in memory retrieval across different retention intervals, and connections between the DMN regions contribute to memory consolidation of past events in healthy older people

{4-Dimethyl­amino-N′-[1-(2-oxidophen­yl)ethyl­idene]benzohydrazidato}(methano­lato)oxidovanadium(V)

The title oxidovanadium(V) complex, [V(C17H17N3O2)(CH3O)O], was obtained by the reaction of 2-acetyl­phenol, 4-dimethyl­amino­benzohydrazide and vanadyl sulfate in methanol. The VV atom is five-coordinated by N,O,O′-donor atoms of the Schiff base ligand, one meth­oxy O atom and one oxide O atom, forming a square-pyramidal geometry

Making therapies culturally relevant: translation, cultural adaptation and field-testing of the Thinking Healthy Programme for perinatal depression in China

BACKGROUND:The prevalence of perinatal depression in China ranges from 15 to 20% and the vast majority of prenatally depressed women do not receive the intervention they require. Recent research evidence shows that evidence based, culturally-adapted psychosocial interventions are effective in reducing mental health problems. The World Health Organization (WHO) has endorsed the Thinking Healthy Programme (THP), which is an evidence based psychosocial intervention that can be delivered by non-mental health specialists. The aim of this study was to translate and adapt THP for the Chinese population and to establish its acceptability when delivered by non-specialists to a group of mothers with perinatal depression. METHODS:The study was conducted in two phases. The THP manual, handbook, and health calendar was translated and adapted based on 8 domains of the Bernal framework (language, metaphors, content, concepts, goals, context, people and methods). Pre-testing was done using cognitive interviewing in the first phase. In second phase of field-testing, THP sessions were delivered to the depressed women by local THP trained nurses. Post intervention, programme survey was used for evaluation. RESULTS:This study showed that the core structure, process and techniques of the THP were culturally compatible with the target Chinese population and did not require major changes. It was found that the adapted version of THP manual, handbook, and health calendar were acceptable, understandable, and culturally relevant to the Chinese women and their family members. Nurses were found as a suitable delivery agent by the mothers and their families. CONCLUSION:The Thinking Healthy Programme is acceptable and transferable to the Chinese cultural and healthcare context and nurses are a suitable delivery agent. The translated and adapted version of THP can be used for further implementation and evaluation studies in the Chinese context. Further evaluation can help establish the effectiveness of the programme and barriers to scale-up in China

Professional support during the postpartum period: primiparous mothers' views on professional services and their expectations, and barriers to utilizing professional help.

BACKGROUND:Primiparous mothers who lack of experience and knowledge of child caring, are usually overwhelmed by multifarious stressors and challenges. Although professional support is needed for primiparas, there is a gap between the necessary high-quality services and the currently provided poor services. This study aimed to explore Chinese primiparous mothers' views on professional services, identify barriers to utilizing professional support, and further understand mothers' expectations of and preferences for the delivery of professional services. METHOD:A descriptive phenomenological study design was utilized in this study, and semi-structured interviews were conducted with 28 primiparous mothers who had given birth in the first year period before the interview and were selected from two community health centres in Xi'an city, Shaanxi Province, Northwest China. Each conversational interview lasted between 20 and 86 min. Colaizzi's seven-step phenomenological approach was used to analyse the data. RESULTS:Three major themes were identified: (a) dissatisfaction with current professional services for postpartum mothers, (b) likelihood of health care professional help-seeking behaviour, (c) highlighting the demands for new health care services. The related seven sub-themes included being disappointed with current hospital services; distrusting services provided by community health centres, private institutes and commercial online platforms; preferring not seeking help from professionals as their first choice; hesitating to express their inner discourse to professionals; following confinement requirement and family burden prevents mothers from seeking professional help; experiencing urgent needs for new baby-care-related services; and determining the importance of mothers' needs. The necessity of professional support in the first month after childbirth was strongly emphasized by the participants. Online professional guidance and support were perceived as the best way to receive services in this study. CONCLUSION:The results of this descriptive phenomenological study suggested that the current maternal and child health care services were insufficient and could not meet primiparous mothers' need. The results also indicated that identifying barriers and providing services focused on mothers' needs may be an effective strategy to enhance primiparous mothers' well-being, and further suggested that feasibility, convenience, and the cultural adaptability of health care services should be considered during the delivery of postpartum interventions