2 results for Anderson, A

  • A parent-focussed early intervention program for autism: Who gets access?

    Birkin, Christina; Anderson, A; Seymour, Frederick; Moore, D (2008)

    Journal article
    The University of Auckland Library

    Background The EarlyBird program is a psycho-educational early intervention program for parents of children with autistic spectrum disorder (ASD). It aims to provide parents with skills to increase their child’s communication and manage challenging behaviour using behavioural techniques. Method Two interlinked studies examined access to the EarlyBird program and barriers which may affect uptake. Study 1 investigated who accessed the EarlyBird program, and what factors influenced this choice. Study 2 was a qualitative investigation which focused on barriers to uptake for ethnic minority groups in New Zealand. Results Findings indicated that approximately 85% of families eligible for the program do not participate. Nonmembership of Autism New Zealand (the agency responsible for administering the program), ethnicity, and length of wait time were significant factors in non-participation. Conclusions A model of factors which may influence uptake of interventions targeting the families of children with a disability is proposed.

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  • 4D imaging of cardiac trabeculae contracting in vitro using gated OCT

    Cheuk, M; Anderson, A; Han, June; Lippok, N; Vanholsbeeck, Frederique; Ruddy, Bryan; Loiselle, Denis; Nielsen, Poul; Taberner, Andrew (2017-01)

    Journal article
    The University of Auckland Library

    Cardiac trabeculae are widely used as experimental muscle preparations for studying heart muscle. However, their geometry (diameter, length, and shape) can vary not only amongst samples, but also within a sample, leading to inaccuracies in estimating their stress production, volumetric energy output, and/or oxygen consumption. Hence, it is desirable to have a system that can accurately image each trabecula in vitro during an experiment. To this end, we constructed an optical coherence tomography (OCT) system and implemented a gated imaging procedure to image actively contracting trabeculae and reconstruct their time-varying geometry. By imaging a single cross section while monitoring the developed force, we found that gated stimulation of the muscle was sufficiently repeatable to allow us to reconstruct multiple contractions to form a 4D representation of a single muscle contraction cycle. The complete muscle was imaged at various lengths and the cross-sectional area along the muscle was quantified during the contraction cycle. The variation of cross-sectional area along the length during a contraction tended to increase as the muscle was contracting, and this increase was greater at longer muscle lengths. To our knowledge, this is the first system that is able to measure the geometric change of cardiac trabeculae in vitro during a contraction, allowing cross-sectional stress and other volume-dependent parameters to be estimated with greater accuracy.

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