Behavioral and subcortical signatures of musical expertise in Mandarin Chinese speakers

Both musical training and native language have been shown to have experience-based plastic effects on auditory processing. However, the combined effects within individuals are unclear. Recent research suggests that musical training and tone language speaking are not clearly additive in their effects on processing of auditory features and that there may be a disconnect between perceptual and neural signatures of auditory feature processing. The literature has only recently begun to investigate the effects of musical expertise on basic auditory processing for different linguistic groups. This work provides a profile of primary auditory feature discrimination for Mandarin speaking musicians and nonmusicians. The musicians showed enhanced perceptual discrimination for both frequency and duration as well as enhanced duration discrimination in a multifeature discrimination task, compared to nonmusicians. However, there were no differences between the groups in duration processing of nonspeech sounds at a subcortical level or in subcortical frequency representation of a nonnative tone contour, for f(o) or for the first or second formant region. The results indicate that musical expertise provides a cognitive, but not subcortical, advantage in a population of Mandarin speakers.Peer reviewe

The influence of fundamental frequency on perceived duration in spectrally comparable sounds

The perceived duration of a sound is affected by its fundamental frequency and intensity: higher sounds are judged to be longer, as are sounds with greater intensity. Since increasing intensity lengthens the perceived duration of the auditory object, and increasing the fundamental frequency increases the sounds perceived loudness (up to ca. 3 kHz), frequency modulation of duration could be potentially explained by a confounding effect where the primary cause of the modulation would be variations in intensity. Here, a series of experiments are described that were designed to disentangle the contributions of fundamental frequency, intensity, and duration to perceived loudness and duration. In two forced-choice tasks, participants judged duration and intensity differences between two sounds varying simultaneously in intensity, fundamental frequency, fundamental frequency gliding range, and duration. The results suggest that fundamental frequency and intensity each have an impact on duration judgments, while frequency gliding range did not influence the present results. We also demonstrate that the modulation of perceived duration by sound fundamental frequency cannot be fully explained by the confounding relationship between frequency and intensity.Peer reviewe

Musical Sophistication and the Effect of Complexity on Auditory Discrimination in Finnish Speakers

Musical experiences and native language are both known to affect auditory processing. The present work aims to disentangle the influences of native language phonology and musicality on behavioral and subcortical sound feature processing in a population of musically diverse Finnish speakers as well as to investigate the specificity of enhancement from musical training. Finnish speakers are highly sensitive to duration cues since in Finnish, vowel and consonant duration determine word meaning. Using a correlational approach with a set of behavioral sound feature discrimination tasks, brainstem recordings, and a musical sophistication questionnaire, we find no evidence for an association between musical sophistication and more precise duration processing in Finnish speakers either in the auditory brainstem response or in behavioral tasks, but they do show an enhanced pitch discrimination compared to Finnish speakers with less musical experience and show greater duration modulation in a complex task. These results are consistent with a ceiling effect set for certain sound features which corresponds to the phonology of the native language, leaving an opportunity for music experience-based enhancement of sound features not explicitly encoded in the language (such as pitch, which is not explicitly encoded in Finnish). Finally, the pattern of duration modulation in more musically sophisticated Finnish speakers suggests integrated feature processing for greater efficiency in a real world musical situation. These results have implications for research into the specificity of plasticity in the auditory system as well as to the effects of interaction of specific language features with musical experiences.Peer reviewe

Carers' experiences of accessing and navigating mental health care for older people in a rural area in Australia

Author accepted manuscript made available following 12 month embargo from date of publication (25 Aug 2015) in accordance with publisher copyright policy. “This is an Accepted Manuscript of an article published by Taylor & Francis in [Aging and Mental Health] on [25 Aug 2015], available online: http:// www.tandfonline.com/10.1080/13607863.2015.1078283”Objectives: Mental health care for older people is primarily delivered in the community and is largely dependent on informal carers. Mental health policy encourages partnerships between carers and service providers to facilitate service access, coordination and positive experience of care. However, carers often lack information and support from services, with the potential for carer burden, and negative impacts on their own health and capacity to fulfil caring tasks. This paper explores rural carers' experiences of accessing care from a range of services for older people with mental health problems. Method: The Pathways Interview Schedule was used to facilitate 9 in-depth care journey interviews with 11 carers of older people with a mental health problem. Interviews explored their journeys to and through mental health, aged care, primary care and social care services. Framework analysis was used to explore carers' experiences and perceptions of care with a focus on access enablers and barriers. Results: Carers had a significant role in navigating services and operationalising care for their relative. Enablers to accessing care included carer knowledge and workers actively involving carers in planning. Barriers included carer mental health literacy, consumer and carer readiness for services, and worker misinterpretation of confidentiality and privacy laws. Conclusion: Carers should be considered key partners in mental health care planning that crosses service sectors. For this to occur, changes are required at the worker level, including increased communication between mental health workers and carers, and the service level, involving training for staff in interpreting confidentiality and privacy policy

Regional responses to the challenge of delivering integrated care to older people with mental health problems in rural Australia

This author accepted manuscript is made available following 12 month embargo from date of publication (2 May 2017) in accordance with the publisher’s copyright policyObjective: Integrated care has been identified as means of managing the demands on the healthcare budget while improving access to and quality of services. It is particularly pertinent to rural health services, which face limited access to specialist and support services. This paper explores the capacity of three rural communities in South Australia to deliver integrated mental health support for older people. Methods: Thirty-one interviews were conducted with local health and social service providers from mental health, community health, general practice, residential aged care, private practice, NGOs and local government as part of a larger action research project on service integration. Results: Participants highlighted differences in service delivery between the communities related to size of the community and access to services. Three structural barriers to delivery of integrated care were identified. These are as follows: fragmentation of governmental responsibility, the current funding climate, and centralisation and standardisation of service delivery. Conclusion: We conclude that despite a focus upon integrated care in mental health policy, many features of current service delivery undermine the flexibility and informal relationships that typically underpin integration in rural communities

Fragmentation in Australian Commonwealth and South Australian State policy on mental health and older people: A governmentality analysis

This article is distributed under the terms of the Creative Commons Attribution-NonCommercial 3.0 License (http://www.creativecommons.org/licenses/by-nc/3.0/) which permits non-commercial use, reproduction and distribution of the work without further permission provided the original work is attributed as specified on the SAGE and Open Access page(https://us.sagepub.com/en-us/nam/open-access-at-sage).Mental health care for older people is a significant and growing issue in Australia and internationally. This article describes how older people’s mental health is governed through policy discourse by examining Australian Commonwealth and South Australian State government policy documents, and commentaries from professional groups, advocacy groups and non-governmental organisations. Documents published between 2009 and 2014 were analysed using a governmentality approach, informed by Foucault. Discourses of ‘risk’, ‘ageing as decline/dependence’ and ‘healthy ageing’ were identified. Through these discourses, different neo-liberal governmental strategies are applied to ‘target’ groups according to varying risk judgements. Three policy approaches were identified where older people are (1) absent from policy, (2) governed as responsible, active citizens or (3) governed as passive recipients of health care. This fragmented policy response to older people’s mental health reflects fragmentation in the Australian policy environment. It constructs an ambiguous place for older people within neo-liberal governmental rationality, with significant effects on the health system, older people and their carers

Ecological and Genomic Attributes of Novel Bacterial Taxa That Thrive in Subsurface Soil Horizons.

While most bacterial and archaeal taxa living in surface soils remain undescribed, this problem is exacerbated in deeper soils, owing to the unique oligotrophic conditions found in the subsurface. Additionally, previous studies of soil microbiomes have focused almost exclusively on surface soils, even though the microbes living in deeper soils also play critical roles in a wide range of biogeochemical processes. We examined soils collected from 20 distinct profiles across the United States to characterize the bacterial and archaeal communities that live in subsurface soils and to determine whether there are consistent changes in soil microbial communities with depth across a wide range of soil and environmental conditions. We found that bacterial and archaeal diversity generally decreased with depth, as did the degree of similarity of microbial communities to those found in surface horizons. We observed five phyla that consistently increased in relative abundance with depth across our soil profiles: Chloroflexi, Nitrospirae, Euryarchaeota, and candidate phyla GAL15 and Dormibacteraeota (formerly AD3). Leveraging the unusually high abundance of Dormibacteraeota at depth, we assembled genomes representative of this candidate phylum and identified traits that are likely to be beneficial in low-nutrient environments, including the synthesis and storage of carbohydrates, the potential to use carbon monoxide (CO) as a supplemental energy source, and the ability to form spores. Together these attributes likely allow members of the candidate phylum Dormibacteraeota to flourish in deeper soils and provide insight into the survival and growth strategies employed by the microbes that thrive in oligotrophic soil environments.IMPORTANCE Soil profiles are rarely homogeneous. Resource availability and microbial abundances typically decrease with soil depth, but microbes found in deeper horizons are still important components of terrestrial ecosystems. By studying 20 soil profiles across the United States, we documented consistent changes in soil bacterial and archaeal communities with depth. Deeper soils harbored communities distinct from those of the more commonly studied surface horizons. Most notably, we found that the candidate phylum Dormibacteraeota (formerly AD3) was often dominant in subsurface soils, and we used genomes from uncultivated members of this group to identify why these taxa are able to thrive in such resource-limited environments. Simply digging deeper into soil can reveal a surprising number of novel microbes with unique adaptations to oligotrophic subsurface conditions