Selectivity of lexical-semantic disorders in Polish-speaking patients with aphasia: evidence from single-word comprehension.

Several neuropsychological studies have shown that patients with brain damage may demonstrate selective category-specific deficits of auditory comprehension. The present paper reports on an investigation of aphasic patients' preserved ability to perform a semantic task on spoken words despite severe impairment in auditory comprehension, as shown by failure in matching spoken words to pictured objects. Twenty-six aphasic patients (11 women and 15 men) with impaired speech comprehension due to a left-hemisphere ischaemic stroke were examined; all were right-handed and native speakers of Polish.

The contribution of the left and right hemispheres to early recovery from aphasia: a SPECT prospective study.

This prospective study examined the relationship between post-stroke recovery of aphasia and changes in cerebral blood flow (CBF). To address the question of right hemisphere (RH) involvement in restitution of language, we tested the hypothesis that the increase in perfusion of the RH is crucial for early recovery from aphasia. Twenty-four right-handed patients with acute aphasia following left hemisphere (LH) ischaemic stroke were examined twice with a six-month interval.

[Cerebral blood flow in patients with various symptoms of hemispatial neglect following ischemic stroke].

Background And Purpose: The most common cause of hemispatial neglect (HN) is cerebral infarction. It can be induced by lesions in many different regions of the right hemisphere. The purpose of this article was to determine the prevalence of post-stroke HN, its clinical picture, and neuroanatomical correlates.

Neuroanatomical correlates of the post-stroke aphasias studied with cerebral blood flow SPECT scanning.

Background: Researchers are not in complete agreement over the extent to which specific language functions are subserved by certain brain areas. The purpose of this article was to determine neuroanatomical correlates of aphasia following cerebrovascular accident.

Material/methods: The participants included 50 stroke patients with a single left-hemisphere lesion and residual mild to severe aphasia.