To save content items to your account,
please confirm that you agree to abide by our usage policies.
If this is the first time you use this feature, you will be asked to authorise Cambridge Core to connect with your account.
Find out more about saving content to .
To save content items to your Kindle, first ensure firstname.lastname@example.org
is added to your Approved Personal Document E-mail List under your Personal Document Settings
on the Manage Your Content and Devices page of your Amazon account. Then enter the ‘name’ part
of your Kindle email address below.
Find out more about saving to your Kindle.
Note you can select to save to either the @free.kindle.com or @kindle.com variations.
‘@free.kindle.com’ emails are free but can only be saved to your device when it is connected to wi-fi.
‘@kindle.com’ emails can be delivered even when you are not connected to wi-fi, but note that service fees apply.
Functional neuroimaging has contributed new insights in the field of aphasia research. Techniques like repetitive transcortical magnetic stimulation (rTMS), Wada testing, and cortical stimulation during neurosurgery with grid mapping, all of which inhibit distinct areas of the brain, have determined which nodes of the networks visualized in functional neuroimaging are critical for each function. The neurological examination of a patient with aphasia can be broken down into six major categories: naming, fluency, repetition, comprehension, reading, and writing. The classical aphasia syndromes result from the infarction of defined vascular distributions, each typically associated with a specific set of neurological deficits, also caused by damage to that particular region of the brain. Patients who develop aphasia following acute stroke typically recover well with only mild long-term language deficits. Many of the techniques currently employed by speech-language pathologists focus on treatment of the damaged component of the system.
Many different conditions cause hearing impairment including inflammation, trauma, aging (presbyacusis), ototoxic drugs, genetic disorders, and stroke. As the blood supply to the auditory system originates from the vertebrobasilar system, hearing loss and tinnitus are common with vertebrobasilar territory ischemic stroke. This chapter reviews the clinical spectrum of hearing impairment associated with stroke. Central hearing impairment results from lesions central to the cochlear nucleus from the brainstem auditory nuclei to the auditory cortex in the temporal lobe. Central hearing abnormalities characterized by difficulty understanding spoken communication usually result from lesions of the central auditory pathways rostral to the cochlear nucleus. Brainstem stroke can cause auditory symptoms such as hearing loss, phantom auditory perceptions (tinnitus and hallucinations), and hyperacusis. Cortical deafness, pure word deafness, auditory agnosia for environmental sounds, and amusia are well-known central auditory disorders associated with hemispheric stroke.