The importance of family’s involvement in care planning has been stressed to cater individualized, person-centered care in residential aged care. However, in reality, there are numerous structural obstacles and barriers that limit opportunities for their involvement. The aim of this article is to explore what they are. The findings based on the 12 focus groups, six groups of care professionals and six groups of family/relatives, reveal that the narrow pathway of communication between staff and families, which is hierarchically structured, one-directional, and clinically driven, enables the former to maintain and control professional boundaries between formal and informal care-giving. Such communication style delimits an opportunity for families to engage in quality discussion about care planning for their loved ones with care staff. Communication within residential aged care facilities embodies complex dynamics of care expectations and responsibilities held by care staff and families.

No abstract

Electroretinogram (ERG) studies have demonstrated that the retinal response to temporally modulated fast-ON and fast-OFF sawtooth flicker is asymmetric. The response to spatiotemporal sawtooth stimuli has not yet been investigated. Perceptually, such drifting gratings or diamond plaids shaded in a sawtooth pattern appear brighter when movement produces fast-OFF relative to fast-ON luminance profiles. The neural origins of this illusion remain unclear (although a retinal basis has been suggested). Thus we presented toad eyecups with sequential epochs of sawtooth, sine-wave, and square-wave gratings drifting horizontally across the retina at temporal frequencies of 2.5-20 Hz. All ERGs revealed a sustained direct-current (DC) transtissue potential during drift and a peak at drift offset. The amplitudes of both phenomena increased with temporal frequency. Consistent with the human perceptual experience of sawtooth gratings, the sustained DC potential effect was greater for fast-OFF cf. fast-ON sawtooth. Modeling suggested that the dependence of temporal luminance contrast on stimulus device frame rate contributed to the temporal frequency effects but could not explain the divergence in response amplitudes for the two sawtooth profiles. The difference between fast-ON and fast-OFF sawtooth profiles also remained following pharmacological suppression of postreceptoral activity with tetrodotoxin (TTX), 2-amino-4-phosphonobutric acid (APB), and 2,3 cis-piperidine dicarboxylic acid (PDA). Our results indicate that the DC potential difference originates from asymmetries in the photoreceptoral response to fast-ON and fast-OFF sawtooth profiles, thus pointing to an outer retinal origin for the motion-induced drifting sawtooth brightness illusion.

No abstract