Anomic aphasia
[11] One study was conducted using a word repetition test as well as fMRI in order to see the highest level of activity as well as where the lesions are in the brain tissue.[11] More specifically, the damage was in a part of the nerve tract called the arcuate fasciculus, for which the mechanism of action is unknown, though it is known to connect the posterior (back) of the brain to the anterior (front) and vice versa.[12] While anomic aphasia is associated with lesions throughout the left hemisphere, severe and isolated anomia has been considered a sign of deep temporal lobe or lateral temporo-occipital damage.Patients with Alzheimer's disease have speech problems linked to dementia or progressive aphasias, which can include anomia.[14][15] The imaging test, mostly done using MRI scans, is ideal for lesion mapping or viewing deterioration in the brain.However, imaging cannot diagnose anomia on its own because the lesions may not be located deep enough to damage the white matter or the arcuate fasciculus.There is a considerable similarity among aphasia syndromes in terms of picture-naming behavior, however anomic aphasiacs produced the fewest phonemic errors and the most multiword circumlocutions.This test aims to: identify the presence of aphasia; provide a profile of the speaker's language functioning according to different language modalities (speaking, listening, reading, writing) and different levels of linguistic description (phonology, morphology, semantics, and syntax); give a measure of severity of any breakdown.Syndrome classification is determined by the pattern of performance on the four language subtests, which assess spontaneous speech, comprehension, repetition, and naming.[11] Few simpler or cheaper options are available, so lesion mapping and speech repetition tests are the main ways of diagnosing anomic aphasia.[22] Subjects often use circumlocutions (speaking in a roundabout way) to avoid a name they cannot recall or to express a certain word they cannot remember.Additionally, patients are able to speak with correct grammar; the main problem is finding the appropriate word to identify an object or person.[27] Additionally, one study researched the effects of using "excitatory (anodal) transcranial direct current stimulation" over the right temporoparietal cortex, a brain area that seems to correlate to language.