Hooded rats with bilateral lesions of the anterior part of the hippocampal formation (HIP), anterior region of the posterior parietal cortex (APC), or posterior region of the posterior parietal cortex (PPC) were compared with controls for their exploration of 5 objects in an open field, habituation of locomotion and object investigation, and response to spatial and nonspatial change. First, all groups displayed habituation of both locomotor and exploratory activity. Second, controls selectively reexplored displaced objects, and APC-lesioned rats reexplored all objects, whereas PPC-and HIP-lesioned rats failed to react to the spatial change. Third, a novel object induced reexploration in all groups. The results are consistent with the roles of the HIP and PPC in spatial information processing. Moreover, the APC and PPC are involved in attentional effortful processing and visuospatial information processing necessary for spatial representation, respectively.This research was supported by the Centre National de la Recherche Scientifique, France.We thank Patricia Scardigli for her contribution to the statistical analyses and A. Christolomme, M. Gavioli, H. Lucchessi, and Patricia Scardigli for their help with the histological processing.

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Virtual reality, or virtual environment computer technology, generates simulated objects and events with which people can interact. Existing and potential applications for this technology in the field of disability and rehabilitation are discussed. The main benefits identified for disabled people are that they can engage in a range of activities in a simulator relatively free from the limitations imposed by their disability, and they can do so in safety. Evidence that the knowledge and skills acquired by disabled individuals in simulated environments can transfer to the real world is presented. In particular, spatial information and life skills learned in a virtual environment have been shown to transfer to the real world. Applications for visually impaired people are discussed, and the potential for medical interventions and the assessment and treatment of neurological damage are considered. Finally some current limitations of the technology, and ethical concerns in relation to disability, are discussed.

A limited number of studies look at older people's use of space outside the 'home' environment, particularly unfamiliar, public urban space. Such unfamiliarity can be created through older people travelling as tourists to new areas; as a consequence of urban regeneration; or as a result of cognitive decline, where the familiar becomes unfamiliar. This paper explores the experiences of older people as pedestrians in unfamiliar urban spaces. In looks at two aspects: older people's spatial anxieties and the barriers (physical, psychological, spatial and social) they perceive and encounter in unfamiliar surroundings. Forty-four participants who took part in a reality cave exercise and a sub group of 10 people who visited an unfamiliar area as pedestrians describe their experience of walking a predetermined route. Given increasing urbanisation and population ageing this is an area of importance to geographers and gerontologists. Our study showed that there are a number of barriers that are a concern for older people in new environments; these include poor signage, confusing spaces, poor paving and 'sensory overload' i.e. noise and complexity of the environment. Landmarks and distinctive buildings were more important to participants than signage in navigating unfamiliar areas. Such experiences can contribute to practice implications for planners in designing neighbourhoods to support older people. Small changes such as placing distance on clearly marked signage; giving further information about particular areas beyond the key tourist points and using landmarks as clear navigational aids are important. This paper also adds to the growing literature on geographical gerontology.

VE-based spatial training is effective for children with complex disabilities, particularly when combined with training that remediates cognitive weaknesses.