Product Description
This digital document is a journal article from Neuropsychologia, published by Elsevier in 2007. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
In associative agnosia early perceptual processing of faces or objects are considered to be intact, while the ability to access stored semantic information about the individual face or object is impaired. Recent claims, however, have asserted that associative agnosia is also characterized by deficits at the perceptual level, which are too subtle to be detected by current neuropsychological tests. Thus, the impaired identification of famous faces or common objects in associative agnosia stems from difficulties in extracting the minute perceptual details required to identify a face or an object. In the present study, we report the case of a patient DBO with a left occipital infarct, who shows impaired object and famous face recognition. Despite his disability, he exhibits a face inversion effect, and is able to select a famous face from among non-famous distractors. In addition, his performance is normal in an immediate and delayed recognition memory for faces, whose external features were deleted. His deficits in face recognition are apparent only when he is required to name a famous face, or select two faces from among a triad of famous figures based on their semantic relationships (a task which does not require access to names). The nature of his deficits in object perception and recognition are similar to his impairments in the face domain. This pattern of behavior supports the notion that apperceptive and associative agnosia reflect distinct and dissociated deficits, which result from damage to different stages of the face and object recognition process. ... Read more

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This digital document is a journal article from Cognitive Brain Research, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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We tested a patient with visual agnosia who had suffered severe bilateral brain damage early in life, on a series of visuomotor tasks. The broad pattern of results confirms that S.B., like the extensively tested patient D.F., shows an impressive array of preserved skills, despite his severe perceptual problems. Also like D.F., S.B. shows certain subtle visuomotor difficulties that can be related to the idea that his partially intact occipito-parietal areas are unable to benefit from interactions with the apparently severely damaged occipito-temporal regions. Unlike D.F., however, he is able to make accurate discriminations of simple visual features, such as object width and orientation, albeit with very slow response times. We hypothesize that several factors such as the early onset of S.B.'s lesion and the long period since his brain lesion have allowed his brain to compensate to a degree what has been impossible in D.F., whose brain damage occurred in adulthood. This may include an element of 'rewiring' and self-monitoring of visuomotor processes that allow S.B. to achieve perceptual access to visual information processed in the dorsal stream: information that is normally only available for on-line visuomotor control. ... Read more

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This digital document is a journal article from Brain and Language, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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The role of sensory-motor representations in object recognition was investigated in experiments involving AD, a patient with mild visual agnosia who was impaired in the recognition of visually presented living as compared to non-living entities. AD named visually presented items for which sensory-motor information was available significantly more reliably than items for which such information was not available; this was true when all items were non-living. Naming of objects from their associated sound was normal. These data suggest that both information about object form computed in the ventral visual system as well as sensory-motor information specifying the manner of manipulation contribute to object recognition. ... Read more

Product Description
This digital document is a journal article from Brain and Cognition, published by Elsevier in 2004. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

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Two little noticed cases in which William Macewen used symptoms of visual agnosia to plan brain surgery on the angular gyrus are reviewed and evaluated. Following a head injury, Macewen's first patient had an immediate and severe visual object agnosia that lasted for about 2 weeks. After that he gradually became homicidal and depressed and it was for those symptoms that Macewen first saw him, some 11 months after the accident. From his examination, Macewen concluded that the agnosia clearly indicated a lesion in ''the posterior portion of the operculum or in the angular gyrus.'' When he removed parts of the internal table that had penetrated those structures the homicidal impulses disappeared. Macewen's second patient was seen for a chronic middle ear infection and, although neither aphasic nor deaf, was 'word deaf.' Slightly later he became 'psychically blind' as well. Macewen suspected a cerebral abscess pressing on both the angular gyrus and the first temporal convolution. A large subdural abscess was found there and the symptoms disappeared after it was treated. The patients are discussed and Macewen's positive results analysed in the historical context of the dispute over the proposed role of the angular gyrus as the visual centre. ... Read more

Product Description
Agnosia (a-gnosis, "non-knowledge", or loss of knowledge)is a loss of ability to recognize objects, persons, sounds,shapes, or smells while the specific sense is not defectivenor is there any significant memory loss. It is usuallyassociated with brain injury or neurological illness,particularly after damage to the occipitotemporal border,which is part of the ventral stream. ... Read more

Product Description
This is part of a 16 volume thematic encyclopedia on vision covering all research aspects of this mutidisciplinary field by 300 contributors from around the world. Each volume is extensively referenced, illustrated and indexed. The articles relate the current state of our knowledge and areas of continuing advancement and will be updated in additional volumes every five years. It is aimed at libraries in all universities, relevant departments and other insitutions conducting research into vision, medical schools and relevant major industrial concerns such as pharmaceutical, optics and robotics companies. ... Read more

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Neurology Joins the Lange CURRENT Series!

Authored by renowned authorities in the field, CURRENT Diagnosis & Treatment in Neurology provides a reliable, current, and ready reference for primary care physicians managing patients with neurologic disorders. ... Read more

Customer Reviews (6)

Great quick reference
This is a fabulous book for quick references and diagnoses.I find it very useful for both the classroom and clinical scenes.

a patient's review
Since neurology is so complex, neurology appointments are so short, and I have so many questions about what is going on in my head, I decided to educate myself on the subject. After reading 'Adrenaline, the Inner World', I moved on to this text.I was pleasantly surprised that the text is well organized, the narrative is clear, simple and direct and on the whole, eminently readable.I applaud this text for being neither too simple nor too complex for a relatively well educated person to understand. Thanks

khinpenn
This book was a perfect compliment to MKSAP when studying for the boards.Easy to read.Gets right to the point.Nice reference text.

Great for intermediates and updated treatment guidelines
This book is great for a quick review of specific diagnoses and common laboratory techniques, and it has many useful tables suited for "point of care". Treatment guidelines are often more updated and clear than those given in the big books (i.e. "Neurology in Clinical Practice" and "Adam And Victor's").

It is not recommended if you are a beginner in neurology, because it dose not deal with examinations skills or a differential approach by symptoms and signs. In the latter case I strongly recommend "Clinical Neurology (Lange Medical Books) by the great Michael J. Aminoff and the general neurology chapters in Harrisons, especially "Approach to the Patient with Neurologic Disease, ...with Peripheral Neuropathy, and ...with Muscle Disease". The general section in Harrisons: "Nervous System Dysfunction" and some specific chapters (Seizures and Epilepsy, MS, WD and many others) are also recommended.

To make this book even better I would suggest the authors to expand the sections on differential diagnoses listed for each major disease topic, i.e. to highlight the most characteristic features distinguishing among related diagnoses. Also inclusion of more diagnostic criteria would be nice (e.g. IHS).

Overall a great book if it is used properly. Already looking forward to a new and updated edition

"His excellency"
A great book, really helpful. Wonderful chapters about Infections (including HIV), dementias, movement dis...etc, it has some weak points: aphasia, apraxia, but its ok, nothing is perfect. Great treatments!! I really,really recommend it! ... Read more

Product Description
This digital document is a journal article from Neuropsychologia, published by Elsevier in . The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
We report a study on a patient (DW) with integrative visual agnosia and a category-specific recognition impairment for living things. We assessed DW's local and global processing and tested if his integrative agnosia could have led directly to his category-specific impairment. The main findings were: (i) DW was faster at identifying local compared to global letters. (ii) DW showed no local-to-global (or global-to-local) interference effects in selective attention tasks. (iii) DW showed a congruency effect in a divided attention task, suggesting that, when his attention was cued to both levels, he could process information simultaneously and integrate local and global information. (iv) Controls were poorer at naming nonliving compared to living things when presented with silhouettes. These data suggest that local and global information are differentially weighted in the visual recognition of living and nonliving things, and that an impairment in processing the overall shape of an object can lead to a category-specific deficit for living things. Crucially, this implies that category-specific impairments do not necessarily reflect damage to the semantic system, and models of semantic memory based on this assumption need to be revised. ... Read more

Product Description
This digital document is a journal article from Journal of Neurolinguistics, published by Elsevier in 2005. The article is delivered in HTML format and is available in your Amazon.com Media Library immediately after purchase. You can view it with any web browser.

Description:
In a series of papers published between 1924 and 1930 Josef Gerstmann described a syndrome comprising finger agnosia, right-left confusion, agraphia and acalculia which was due, he thought, to a left parieto-occipital lesion. In the ensuing years Gerstmann's description was accepted by a number of clinicians, some of whom reported, in addition, a developmental form of the syndrome. Others, on the contrary, disputed the clinical relevance and the localizing value of the syndrome. The debate has brought to light a number of subtle difference which had passed unnoticed prior to Gerstmann's publications. ... Read more