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Reading words versus seeing font or handwriting style: a study of hemifield processing.
Exp Brain Res
January 2025
Department of Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, Canada.
Tachistoscopic studies have established a right field advantage for the perception of visually presented words, which has been interpreted as reflecting a left hemispheric specialization. However, it is not clear whether this is driven by the linguistic task of word processing, or also occurs when processing properties such as the style and regularity of text. We had 23 subjects perform a tachistoscopic study while they viewed five-letter words in either computer font or handwriting.
View Article and Find Full Text PDFLateralization of the Aberrant Amplitude of Low-Frequency Fluctuation within the Default Mode Network in Patients with Mild Cognitive Impairment.
Acad Radiol
January 2025
Department of Radiology, Eye & ENT Hospital of Fudan University, 83 Fenyang Road, Shanghai 200031, China (Q.X.). Electronic address:
Rationale And Objectives: Alzheimer's disease (AD) is the most common pathogenesis of dementia, and mild cognitive impairment (MCI) is considered as the intermediate stage from normal elderly to AD. Early detection of MCI is an essential step for the timely intervention of AD to slow the progression of this disease. Different form previous studies in the whole-brain spontaneous activities, this research aimed to explore the low-frequency amplitude spectrum activities of patients with MCI within the default mode network (DMN), which has been involved in the process of maintaining normal cognitive function.
View Article and Find Full Text PDFHand dominance shift during sleep in sexsomnia: a clue to pathophysiology?
J Clin Sleep Med
January 2025
Minnesota Regional Sleep Disorders Center, and Departments of Psychiatry, Hennepin County Medical Center, and University of Minnesota Medical School, Minneapolis, MN.
Study Objectives: To elucidate whether awake handedness in sexsomnia is retained during sleep to uncover potential clues about the underlying neurophysiologic mechanisms.
Methods: Participants' and observers' self-reported handedness during sexsomnia events.
Results: Case 1: A 22 y/o right-handed female with an eight-year history of nocturnal sleep-related masturbatory behavior (SMB) involving the left hand (LH) exclusively.
Planum Temporale Asymmetries in Primates: A Comparative Study in Great Apes and Monkeys.
Am J Biol Anthropol
January 2025
Michale E. Keeling Center for Comparative Medicine and Research, University of Texas MD Anderson Cancer Center, Bastrop, Texas, USA.
Objectives: Most human brains exhibit left hemisphere asymmetry for planum temporale (PT) surface area and gray matter volume, which is interpreted as cerebral lateralization for language. Once considered a uniquely human feature, PT asymmetries have now been documented in chimpanzees and olive baboons. The goal of the current study was to further investigate the evolution of PT asymmetries in nonhuman primates.
View Article and Find Full Text PDFSynchronization of auditory-hand tapping coupling: the effect of aging.
Exp Brain Res
January 2025
Center of Advanced Technologies in Rehabilitation, Sheba Medical Center, Ramat Gan, Israel.
Hand(s)-tapping tasks have been extensively studied in order to characterize the features of sensorimotor synchronization (SMS). These tasks frequently require participants to synchronize their tapping pace to an external, metronome-like sound. The impact of ageing on SMS abilities remains mainly unexplored.
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