Jump to resource home accesibility contact site map send a page frequent questions español committed to progress, research, education and culture share main menu start go straightforward to main resource ramón areces foundation coming events research funding scholarships multimedia library webtv publications monographs main menu end you are in: events events international symposium: differential diagnosis of cortical dementias: a multidisciplinary approach life and material sciences | madrid, october 29-30, 2012 presentation dementia of the alzheimer's type (dat) has the highest incidence and prevalence for dementia in the ageing population. viagra samples The pathology of dat, however, is not the only disease that causes dementia. From the neuro-cognitive viewpoint, dat in its most typical presentation is characterised by severe impairment of memory ¯or to be more precise, new learning¯ which forms an early and prominent feature in a landscape of global cognitive decline. jak dziala viagra viagra More recently, studies have also described several different "atypical" presentations of dat. In one, known as posterior cortical atrophy (pca), the most prominent impairments are in the domain of visuo-spatial processing. viagra coupon In another, sometimes considered a form of primary progressive aphasia (ppa), language function is the earliest and most severe problem. cheap generic viagra Furthermore, there are now several well-delineated varieties of cortical dementia that are caused by non-alzheimer pathologies. In 1996, snowden, neary and mann introduced the term "fronto-temporal lobar degeneration" (ftld) to describe a group of cortical dementias that contrast with dat in two regards. viagra or viagra yahoo answers First, the prominent deficit in these conditions is not memory, or at least not the kind of memory especially vulnerable in dat, i. buy viagra canada E. The ability to encode and retrieve new episodic information. can i buy viagra in mexico Second, these conditions produce less global, more selective cognitive impairments. viagra online without prescription The ftld spectrum includes: (i) behavioural variant fronto-temporal dementia (bvftd), which is characterised especially by deterioration of the executive control system; (ii) semantic dementia (sd), characterised by disintegration of conceptual knowledge or semantic memory; and (iii) progressive non-fluent aphasia (pnfa), characterised by language impairments such as phonological errors and dysfluent and/or poorly structured speech. viagra cost Beyond dat, both typical and atypical, and beyond the component syndromes of ftld, there are yet further dementing conditions associated with diseases such as motor-neuron disease (mnd), dementia with lewy bodies (dlb), progressive supranuclear palsy (psp) and cortico-basal degeneration (cbd). Some of these syndromes are rare, especially relative to dat. Furthermore, although these degenerative conditions can be highly distinctive in their purest presentations, inter-individual differences in presentation can blu. effects 200mg viagra jak dziala viagra viagra