How does alexia differ from dyslexia? Alexia and dyslexia are related terms that refer to different reading disorders. Here’s how they differ: Alexia: Alexia is an acquired disorder of written language comprehension, i.e., difficulty in reading. Alexia is a neurological condition characterized by the loss or impairment of the ability to read, often due to …
Global Aphasia Symptoms What are the clinical features of global aphasia and where are the lesions that produce it? Spontaneous speech is nonfluent, with poor repetition and poor comprehension. The output is restricted to meaningless speech sounds or stereotypes. These lesions involve Broca’s and Wernicke’s area. They may be combined cortical–subcortical or purely subcortical.
Mixed Transcortical Aphasia Symptoms What are the clinical features of mixed transcortical aphasia, where is the lesion responsible for it, and what is its vascular territory? There is absent spontaneous speech, impaired comprehension, and intact repetition. Stock phrases, such as “you know” and “the thing is,” and echolalia are produced. The lesion includes the areas that …
Transcortical Sensory Aphasia Symptoms What are the clinical features of transcortical sensory aphasia and where is the lesion responsible for it? Spontaneous speech is fluent, with good repetition, echolalia, impaired auditory and reading comprehension, right visual field deficits, and rare motor and sensory deficits. Lesions outside of Wernicke’s area in the surrounding temporoparietal area are responsible.
Symptoms of transcortical motor aphasia What are the clinical features of transcortical motor aphasia and where are the lesions responsible for it? Spontaneous speech is nonfluent, with good repetition and good comprehension, delayed initiation of output, brief utterances, semantic paraphasic errors, and echolalia. Lesions around Broca’s area in the supplementary motor area or its connections to Broca’s …
Symptoms of Wernickes aphasia What are the clinical features of Wernicke’s aphasia and where is the lesion responsible for it? Wernicke’s aphasia is characterized by fluent speech, good articulation, good or sometimes exaggerated prosody (the expressivity of language), impaired naming, phonemic and semantic paraphasias, poor auditory and reading comprehension, impaired repetition, and fluent but empty writing. It …
Symptoms of conduction aphasia What are the clinical features of conduction aphasia and where is the lesion that produces it? Conduction aphasia is a fluent aphasia, with good comprehension, poor repetition, paragrammatic errors, anomia, paraphasic errors, good recitation, and good reading aloud. While any type of paraphasia may be seen, the vast majority of substitutions involves phonemes …