Aphasia in Alzheimer's disease: Frequency and characteristics.

Aphasia is frequently observed in Alzheimer's disease, with its prevalence increasing as the disease progresses. This study highlights the importance of recognizing early language impairments in Alzheimer's disease, and suggests that comprehensive language assessments are crucial for early diagnosis and effective communication interventions.

Neuropsychological tests used for dementia assessment in Japan: Current status.

Aim: This study aimed to investigate the assessment tools dementia specialists use in clinical practice, reasons for their use and assessment-related factors.

Methods: A questionnaire survey was carried out from 15 September 2021 to 20 October 2021 among 1858 dementia specialists in Japan, with responses obtained via mail or using a Web form accessed via a Web address.

Results: Of the 1858 specialists who were sent the questionnaire, 574 responded, yielding a response rate of 32.

The classical backward digit span task detects changes in working memory but is unsuitable for classifying the severity of dementia.

Dementia is characterized by the deterioration of working memory (WM). The backward digit span (DS) task and reading span test (RST) are measures of WM. DS task and RST have not been directly compared in assessing dementia.

Assessment of cube-copying among community-dwelling elderly living in Japan using the vertex criterion and parallelism.

Background: The cube-copying test is used to assess cognitive function. It is one of the methods used to distinguish healthy older individuals from those with cognitive impairment based on its 3 mm vertex criterion and parallel line errors. We sought to assess how: (1) precisely elderly community-dwelling individuals draw cubes based on two different vertex criteria; and (2) they keep the parallelism of lines.

Acquired stuttering in a patient with Wernicke's aphasia.

We report a patient with aphasia caused by cerebral infarction in the left temporal, parietal and occipital lobes that was complicated by acquired stuttering (AS), which is an unusual association. Our findings indicated that Wernicke's area might be involved in the development of AS.

Demonstrating a wordlikeness effect on nonword repetition performance in a conduction aphasic patient.

The purpose of this study was to identify the nature of the deficit for a conduction aphasic patient in order to evaluate two different theories of conduction aphasia. First, a conduction aphasic patient FS was tested on auditory word-pair discrimination, word-repetition, and picture-naming. The results of these tasks indicated that her deficit was likely to be post-lexical rather than perceptual or lexical.