Browsing by Subject "language"

Now showing 1 - 4 of 4
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    Cognitive control of movement via the cerebellar-recipient thalamus.
    (Front Syst Neurosci, 2013-10-01) Prevosto, Vincent; Sommer, Marc A
    The cognitive control of behavior was long considered to be centralized in cerebral cortex. More recently, subcortical structures such as cerebellum and basal ganglia have been implicated in cognitive functions as well. The fact that subcortico-cortical circuits for the control of movement involve the thalamus prompts the notion that activity in movement-related thalamus may also reflect elements of cognitive behavior. Yet this hypothesis has rarely been investigated. Using the pathways linking cerebellum to cerebral cortex via the thalamus as a template, we review evidence that the motor thalamus, together with movement-related central thalamus have the requisite connectivity and activity to mediate cognitive aspects of movement control.
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    Cortical stimulation mapping for localization of visual and auditory language in pediatric epilepsy patients.
    (Journal of neurosurgery. Pediatrics, 2019-11-08) Muh, Carrie R; Chou, Naomi D; Rahimpour, Shervin; Komisarow, Jordan M; Spears, Tracy G; Fuchs, Herbert E; Serafini, Sandra; Grant, Gerald A
    OBJECTIVE:To determine resection margins near eloquent tissue, electrical cortical stimulation (ECS) mapping is often used with visual naming tasks. In recent years, auditory naming tasks have been found to provide a more comprehensive map. Differences in modality-specific language sites have been found in adult patients, but there is a paucity of research on ECS language studies in pediatric patients. The goals of this study were to evaluate word-finding distinctions between visual and auditory modalities and identify which cortical subregions most often contain critical language function in a pediatric population. METHODS:Twenty-one pediatric patients with epilepsy or temporal lobe pathology underwent ECS mapping using visual (n = 21) and auditory (n = 14) tasks. Fisher's exact test was used to determine whether the frequency of errors in the stimulated trials was greater than the patient's baseline error rate for each tested modality and subregion. RESULTS:While the medial superior temporal gyrus was a common language site for both visual and auditory language (43.8% and 46.2% of patients, respectively), other subregions showed significant differences between modalities, and there was significant variability between patients. Visual language was more likely to be located in the anterior temporal lobe than was auditory language. The pediatric patients exhibited fewer parietal language sites and a larger range of sites overall than did adult patients in previously published studies. CONCLUSIONS:There was no single area critical for language in more than 50% of patients tested in either modality for which more than 1 patient was tested (n > 1), affirming that language function is plastic in the setting of dominant-hemisphere pathology. The high rates of language function throughout the left frontal, temporal, and anterior parietal regions with few areas of overlap between modalities suggest that ECS mapping with both visual and auditory testing is necessary to obtain a comprehensive language map prior to epileptic focus or tumor resection.
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    I see what you are saying.
    (Elife, 2016-06-09) Cogan, Gregory B
    The motor cortex in the brain tracks lip movements to help with speech perception.
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    Latent Class Growth Trajectories of Letter Name Knowledge During Pre-Kindergarten and Kindergarten.
    (Journal of applied developmental psychology, 2020-07) Carr, Robert C; Bratsch-Hines, Mary; Varghese, Cheryl; Vernon-Feagans, Lynne
    A major developmental task for young children in the United States involves the acquisition of knowledge about the letters in the English alphabet. In the current study, we examined the growth trajectories of children's letter name knowledge (LNK) during pre-kindergarten and kindergarten. A diverse sample of 1,015 children was drawn from the National Center for Early Development and Learning Multi-State Study of Pre-Kindergarten. Latent class growth analyses were used to identify three heterogeneous classes of children based on their LNK growth trajectories. Children's fall-of-pre-kindergarten language skills were associated with trajectory class membership, which in turn was associated with children's spring-of-kindergarten literacy skills. We also found that the association between children's fall-of-pre-kindergarten language skills and spring-of-kindergarten literacy skills was partially mediated by trajectory class membership. These findings point to the importance of LNK skill development as a marker variable to monitor and support children's emergent literacy development.