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A functional dissociation of the left frontal regions that contribute to single word production tasks
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In: Neuroimage (2021)
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Lesions that do or do not impair digit span: a study of 816 stroke survivors
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Geva, Sharon; Truneh, Teodros; Seghier, Mohamed L; Hope, Thomas M H; Leff, Alex P; Crinion, Jennifer T; Gajardo-Vidal, Andrea; Lorca-Puls, Diego L; Green, David W; Price, Cathy J
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In: Brain Commun (2021)
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Abstract:
Prior studies have reported inconsistency in the lesion sites associated with verbal short-term memory impairments. Here we asked: How many different lesion sites can account for selective impairments in verbal short-term memory that persist over time, and how consistently do these lesion sites impair verbal short-term memory? We assessed verbal short-term memory impairments using a forward digit span task from the Comprehensive Aphasia Test. First, we identified the incidence of digit span impairments in a sample of 816 stroke survivors (541 males/275 females; age at stroke onset 56 ± 13 years; time post-stroke 4.4 ± 5.2 years). Second, we studied the lesion sites in a subgroup of these patients (n = 39) with left hemisphere damage and selective digit span impairment—defined as impaired digit span with unimpaired spoken picture naming and spoken word comprehension (tests of speech production and speech perception, respectively). Third, we examined how often these lesion sites were observed in patients who either had no digit span impairments or digit span impairments that co-occurred with difficulties in speech perception and/or production tasks. Digit span impairments were observed in 222/816 patients. Almost all (199/222 = 90%) had left hemisphere damage to five small regions in basal ganglia and/or temporo-parietal areas. Even complete damage to one or more of these five regions was not consistently associated with persistent digit span impairment. However, when the same regions were spared, only 5% (23/455) presented with digit span impairments. These data suggest that verbal short-term memory impairments are most consistently associated with damage to left temporo-parietal and basal ganglia structures. Sparing of these regions very rarely results in persistently poor verbal short-term memory. These findings have clinical implications for predicting recovery of verbal short-term memory after stroke.
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Keyword:
Original Article
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URL: https://doi.org/10.1093/braincomms/fcab031 http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8066865/
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Damage to Broca’s area does not contribute to long-term speech production outcome after stroke
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In: Brain (2021)
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Brain regions that support accurate speech production after damage to Broca’s area
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In: Brain Commun (2021)
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Right cerebral motor areas that support accurate speech production following damage to cerebellar speech areas
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In: Neuroimage Clin (2021)
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Research on bilingualism as discovery science
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In: Brain Lang (2021)
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A Data-Based Approach for Selecting Pre- and Intra-Operative Language Mapping Tasks
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In: Front Neurosci (2021)
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Neuromodulatory Control and Language Recovery in Bilingual Aphasia: An Active Inference Approach
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In: Behav Sci (Basel) (2020)
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The Flipped Classroom: An Innovative Approach to Medical Education in Ophthalmology
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In: J Acad Ophthalmol (2020)
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Kagta Iwitkekne Parikwaki - Parantunka ; Dicionário Palikur-Português e Vocabulário Português-Palikur
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Literacy for the 21st Century: A Balanced Approach, 3rd edition
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Brief Stimulus Exposure Fully Remediates Temporal Processing Deficits Induced by Early Hearing Loss
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Phase Relationships of Hydrous Alkalic Magmas at High Pressures: Production of Nepheline Hawaiitic to Mugearitic liquids by Amhibole-Dominated Fractional Crystallization within the Lithospheric Mantle
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In: Journal of Petrology (2015)
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Phase Relationships of Hydrous Alkalic Magmas at High Pressures: Production of Nepheline Hawaiitic to Mugearitic liquids by Amhibole-Dominated Fractional Crystallization within the Lithospheric Mantle
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In: Journal of Petrology (2015)
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Dissociating the semantic function of two neighbouring subregions in the left lateral anterior temporal lobe
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Comparing language outcomes in monolingual and bilingual stroke patients
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Matrix analytic methods with Markov decision processes for hydrological applications.
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Dissecting the functional anatomy of auditory word repetition
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