Using familiar songs, such as Christmas carols, were used to test whether SD patients were able to recognize the tones and melodies of the songs if the patients were just given the words of the song. In the analysis of semantic memory using melodies as stimuli, the contents of semantic memory can include many other aspects aside from recognition of the melody, such as the general information about the music (composer, genre, year of release). Results have shown that musicians who have semantic dementia are able to identify and recognize certain melodic tones.Further exploring the tests of music and semantic memory, results of a study that centered on the comprehension of emotion in music indicated that Alzheimers Disease (AD) patients retained the ability to discern emotions from a song while non-AD degenerative disease patients, such as those with semantic dementia (SD), show impaired comprehension of these emotions. Moreover, several dementia patients, all with varied musical experience and knowledge, all demonstrated an understanding of the fundamental governing rules of western music. Essentially, it was found that superordinate knowledge of music, such as the rules of composition, may be more robust than knowledge of specific music.Regarding the neurobiological correlates for this study, it was determined, via lesion studies, that bilateral (but especially the left-side of the brain) fronto-temporoparietal areas are significant in the associative processing of melodies.
Lentigo simplex  is the most common form of lentigo. : 29  A single lesion or multiple lesions (lentigines) may be present at birth or more commonly first develop in early childhood. Lentigo simplex is not induced by sun exposure, and it is not associated with any medical diseases or conditions. It is also referred to as simple lentigo and juvenile lentigo. This condition also affects cats, those with orange coloration most often, and can appear on the nose, lips, and eyes as the cat ages. See also
Balloon cell nevus
List of cutaneous conditions

References


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