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Hand 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.
Hierarchical chirality observed from chiral supramolecular assembling of racemic and enantiopure helicene derivatives on silica nanohelix surfaces.
Nanoscale
January 2025
CBMN, CNRS, UMR 5248, University of Bordeaux, 33600 Pessac, France.
Cast films of racemic helicene derivatives adsorbed onto the surface of nanometric silica helices with controlled handedness exhibited distinct CD signals, whereas no CD signal was observed in the absence of silica nanohelices. These CD signals originate from the helical supramolecular assemblies formed by the racemic mixture of helicenes, with no evidence of enantiospecific adsorption. Interestingly, when enantiomerically pure forms of these helicenes were drop-cast onto the silica helices, different CD spectra were observed depending on the combination of the helicenes' handedness with that of the silica nanohelices.
View Article and Find Full Text PDFAmplifying and Reversing the Chiral Bias in Asymmetric Photo-Polymerization Reaction.
Adv Sci (Weinh)
December 2024
Key Laboratory of Precision and Intelligent Chemistry, School of Chemistry and Materials Science, University of Science and Technology of China, Hefei, Anhui, 230026, China.
Circularly polarized light (CPL) is inherently chiral and is regarded as one possible source for the origin of homochirality. Coincidentally, chiral metal nanoparticles have great prospects in asymmetric photochemical reactions since they can enhance the chiral light-matter interactions. Nonetheless, little is known about how the spin angular momentum of light competes with the chiral electromagnetic field in the vicinity of a chiral nanoparticle during the chiral induction and amplification process.
View Article and Find Full Text PDFThe cortical areas processing periodontal ligament nociception in mice.
J Oral Biosci
December 2024
Department of Biology, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan; Division of Oral and Craniomaxillofacial Research, Nihon University School of Dentistry, 1-8-13 Kanda-Surugadai, Chiyoda-ku, Tokyo 101-8310, Japan. Electronic address:
Objectives: Toothaches are often poorly localized. Although periodontal pain is better localized, it can spread to other areas. Ultimately, the cerebral cortex processes nociception, with somatotopic organization possibly playing a role in localizing the origin.
View Article and Find Full Text PDFAfter the n10: late oVEMP peaks in patients with unilateral vestibular loss and healthy volunteers.
Exp Brain Res
December 2024
Central Clinical School, Faculty of Medicine and Health, The University of Sydney, Sydney, Australia.
Article Synopsis
- The ocular vestibular evoked myogenic potential (oVEMP) measures how well the otolith organs function, primarily focusing on muscle responses elicited by sound stimuli.
- The study examined the characteristics and pathways of late peaks in oVEMPs across different groups: healthy individuals, and patients with various levels of hearing and vestibular loss, using both bone and air-conducted stimuli.
- Findings revealed that in healthy subjects, the initial waves were largest and predominantly contralateral, while patients with vestibular function could still produce late peaks, suggesting they originate from a different mechanism unrelated to hearing status.
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