We report a case who developed jargonagraphia, severe aphasia and unilateral spatial neglect due to cerebral infarction in the left hemisphere. The patient was a 57 year-old left-handed woman. She suddenly developed hemiplegia on the right side and aphasia, and was admitted to our hospital. Neuropsychological examination showed non-fluent spontaneous speech. Repetition, reading and auditory comprehension were impaired. Writing was severely impaired and she showed paragraphia without meaning (jargonagraphia). Right unilateral spatial neglect and buccofacial apraxia were noted, but neither ideomotor nor ideational apraxia was observed. The mechanisms of jargonagraphia remain unknown. The localization of language function in this patient is not a mirror image of same function in dextral aphasia. Her condition was considered that free-running on motor engrams of characters stored in the right hemisphere caused jargonagraphia.
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Autism Res
December 2024
Psychiatry and Addictology Department, CIUSSS-NIM Research Center, University of Montreal, Montreal, Quebec, Canada.
Child-directed speech (CDS), which amplifies acoustic and social features of speech during interactions with young children, promotes typical phonetic and language development. In autism, both behavioral and brain data indicate reduced sensitivity to human speech, which predicts absent, decreased, or atypical benefits of exaggerated speech signals such as CDS. This study investigates the impact of exaggerated fundamental frequency (F0) and voice-onset time on the neural processing of speech sounds in 22 Chinese-speaking autistic children aged 2-7 years old with a history of speech delays, compared with 25 typically developing (TD) peers.
View Article and Find Full Text PDFSci Rep
December 2024
Department of Neuroscience and Biomedical Engineering, Aalto University, Espoo, Finland.
The study of the cortical basis of reading has greatly benefited from the use of naturalistic paradigms that permit eye movements. However, due to the short stimulus lengths used in most naturalistic reading studies, it remains unclear how reading of texts comprising more than isolated sentences modulates cortical processing. To address this question, we used magnetoencephalography to study the spatiospectral distribution of oscillatory activity during naturalistic reading of multi-page texts.
View Article and Find Full Text PDFAJNR Am J Neuroradiol
December 2024
From the Department of Radiology, (Luca Pasquini), Yale New Haven Hospital, Yale Medical School, New Haven, CT, USA; Department of Radiology (Luca Pasquini, Mehrnaz Jenabi, Andrei I. Holodny), Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Medical Physics (Antonio Napolitano, Leonardo Spitoni), Bambino Gesù Children's Hospital, Rome, Italy; Department of Engineering (Maurizio Schmid), University Roma Tre, Rome, Italy; Department of Radiology (Francesco Dellepiane) Bambino Gesù Children's Hospital, Rome, Italy; Department of Medical Physics (Kyung K. Peck), Memorial Sloan Kettering Cancer Center, New York, NY, USA; Department of Radiology (Andrei I. Holodny), Weill Medical College of Cornell University, New York, NY, USA; Department of Neuroscience (Andrei I. Holodny), Weill Cornell Graduate School of the Medical Sciences, New York, NY, USA.
Background And Purpose: The interaction between language and other cognitive networks in patients harboring brain tumors is poorly understood. We studied the modification of the cognitive control network (CCN) induced by brain tumors and its participation in language reorganization. We hypothesized that patients with brain tumors and reorganized language would show modification of the CCN compared to patients who remain left dominant.
View Article and Find Full Text PDFNeuroimage
December 2024
School of Psychology, Shenzhen University, Shenzhen, China. Electronic address:
Understanding how children acquire syntactic structures from a limited set of grammatical rules and use them creatively to convey meaning has been a longstanding interest for scientific communities. Previous studies on syntactic development have revealed its close correlation with the development of vocabulary and working memory. Our study sought to elucidate how the relations between syntactic processing, word processing, and working memory were instantiated in the brain, and how earlier neural patterns might predict language abilities one year later.
View Article and Find Full Text PDFJ Biomed Phys Eng
December 2024
Department of Medical Physics & Biomedical Eng., School of Medicine, Tehran University of Medical Sciences (TUMS), Tehran, Iran.
Background: Acquiring new knowledge necessitates alterations at the synaptic level within the brain. Glutamate, a pivotal neurotransmitter, plays a critical role in these processes, particularly in learning and memory formation. Although previous research has explored glutamate's involvement in cognitive functions, a comprehensive understanding of its real-time dynamics remains elusive during memory tasks.
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