pelican). Gauthier et al. (1999) have argued that categorisation is a very relevant part of face recognition therefore prosopagnosia may be the damage to the ability to discriminate objects at increasingly lower categorical levels. Although support can be found for both of these arguments the research field has not yet been able to find a specific conclusion for either.
Evidence from neuroimaging associated prosopagnosia with deficits in postereo-inferior part of occipital-temporal cortices, either bilaterally or unilaterally in the right hemisphere. However some patients have sustained damages in much larger areas than this, occasionally affecting all of the lobes. For example, patient LH (Farah, Levinson & Klein, 1995) sustained damage to the temporo-occipital regions, inferior frontal and anterior parietal lobes. Therefore it is striking that such vast damage has resulted in "mainly" face recognition problems. This could be suggestive of a face recognition network or a pathway rather than a specific local point in the brain. On the other hand, it could also suggest that a face recognition area cannot exist because some patients" damage is too vast for it to be a one module. However, other research (Rolls, 1984), mainly on monkeys suggested an area with increased activation when subjected to face stimuli (cited in Clarke, Lindemann, Meader, Borrouat&Assal, 1997). Such findings have also been replicated on humans, using activation studies. McCathy, Puce and Allison (1997), found that the region of fusiform gyrus responded highly selectively to faces as opposed to other stimuli, which indicated the apparent existence of a specific face area (cited in Gauthier, Behrmann & Tarr, 1999). However, Gauthier, Anderson, Tarr, Skudlaski and Gore (1997), have found this "face area" sensitive to matching of pictures of common objects (cited in Gauthier et al. 1999). Therefore it is possible that the area of fusiform gyrus is dedicated not only to face recognition but also to identification of stimuli that requires subordinate-level matching.
This article describes the Memory process of Human beings from the aspects of both neurobiologists and psychologists, and also explains different kinds of memory phenomenon as well as examples of forgetfulness. The neurobiologists are interested in figuring out the "hardware" of memory, while psych...
Neuropsyhological studies involving patients with prosopagnosia (McNeil and Warrington, 1993; ), a selective impairment of the ability to recognize familiar faces despite a largely preserved ability to recognize objects, provides strong evidence that distinct neural systems mediate face perception. ... The lesions associated with prospagnosia are found in the ventral occipitotemporal cortex and are usually bilateral(ref dam sergent) however there is evidence of cases of prosopagnosia associated with damage confined to the right hemisphere (Derenzi and Derenzi et al.) ...
1. Discuss the major brain structures involved in hearing analysis/comprehension. Explain for each major structure what problems in hearing and/or analysis/comprehension would arise if they were damaged. The central auditory system has several brain stem nuclei: cochlear nuclei, superior olivary...
Blind people for example, cannot recognise themselves in a mirror, yet nobody would argue that they are not self-aware, similarly people brought up in communities in which mirrors are not used have also shown difficulty in recognising themselves when shown a mirror for the first time, and in fact some cases of prosopagnosia, a disorder which leads to an inability to recognise faces, have been found to be so extreme that people cannot even recognise their own reflection. ...