Our knowledge of age-related changes in auditory processing in the central auditory system is limited, unlike the changes in the peripheral hearing organs which are more extensively studied. This study aims to further understanding of temporal processing in aging using non-invasive electrophysiological measurements in a rat model system. Amplitude modulation following responses (AMFRs) were assessed using sinusoidally amplitude modulated (SAM) tones presented to aged (92- to 95-weeks old) and young (9- to 12-weeks old) Fischer-344 rats. The modulation frequency and sound level were systematically varied, and the SAM stimuli were also presented simultaneously with wideband background noise at various levels. The overall shapes and cutoff frequencies of the AMFR temporal modulation transfer functions (tMTFs) were similar between young and aged animals. The fast Fourier transform (FFT) amplitudes of the aged animals were similar to the young in the 181–512 Hz modulation frequency range, but were significantly lower at most modulation frequencies above and below. There were no significant age-related differences in the nature of growth or FFT amplitudes with change in sound level at 256 and 1024 Hz modulation frequencies. The AMFR amplitudes were also not correlated with the ABR wave I or wave III amplitudes elicited for broadband click stimuli presented at the same sound level suggesting that sustained AMFR provide complementary information to phasic ABR responses. The FFT amplitudes varied significantly between young and aged animals for SAM stimuli in the presence of background noise, depending on the modulation frequency used and signal to noise ratio. The results show that the representation of temporally modulated stimuli is similar between young and aged animals in quiet listening conditions, but diverges substantially with the addition of background noise. This is consistent with a decrease in inhibition causing altered temporal processing with age.

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Metropolitan Australia is suffering from a serious shortage of acute hospital beds. Simplistic comparisons with the Organisation for Economic Co-operation and Development bed numbers are misleading because of the hybrid Australian public/private hospital system. The unavailability of most private beds for acute emergency cases and urban/rural bed imbalances have not been adequately considered. There is a lack of advocacy for acute bed availability. This attitude permeates government, health professions and the health bureaucracy. Planners, politicians, analysts and the media have adopted false hopes of reducing acute demand by prevention and primary care strategies, vital as these services are to a balanced healthcare system. This paper directly challenges the ideology that says Australia depends too heavily on hospital-based healthcare. Rebuilding the bed base requires recognition of the need for an adequate acute hospital service and strong advocacy for bed-based care in the medical and nursing professionals who should be driving policy. The forces opposing bed-based care are strong and solutions might include legislative definition of bed numbers and availability.

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Whale Watching as an alternative to the practice of commercial and 'scientific' whaling has evolved as an ecotourism activity. This paper explores whale watching in an effort to determine its economic and social viability as a sustainable, marine tourism activity -and whether the whale and the tourist can coexist in the future. We define whale watching as an ecotourism product, as it holds the potential for sustainable practice, one that is both ecologically sound and profitable. Responsible whale watching is seen as a clean, green industry that simultaneously supports local economies and promotes whale education and conservation.The question is, can this ecotourism activity live up to these expectations?