Shared posts

29 Dec 14:36

Neural representation of linguistic feature hierarchy reflects second-language proficiency

Publication date: 15 February 2021

Source: NeuroImage, Volume 227

Author(s): Giovanni M. Di Liberto, Jingping Nie, Jeremy Yeaton, Bahar Khalighinejad, Shihab A. Shamma, Nima Mesgarani

23 Aug 09:45

Cerebellar development and its mediation role in cognitive planning in childhood

by Judy A. Kipping , Yingyao Xie , Anqi Qiu

Abstract

Recent evidence suggests that the cerebellum contributes not only to the planning and execution of movement but also to the high‐order cognitive planning. Childhood is a critical period for development of the cerebellum and cognitive planning. This study aimed (a) to examine the development of cerebellar morphology and microstructure and (b) to examine the cerebellar mediation roles in the relationship between age and cognitive planning in 6‐ to 10‐year‐old children (n = 126). We used an anatomical parcellation to quantify cerebellar regional gray matter (GM) and white matter (WM) volumes, and WM microstructure, including fractional anisotropy (FA) and mean diffusivity (MD). We assessed planning ability using the Stockings of Cambridge (SOC) task in all children. We revealed (a) a measure‐specific anterior‐to‐posterior gradient of the cerebellar development in childhood, that is, smaller GM volumes and greater WM FA of the anterior segment of the cerebellum but larger GM volumes and lower WM FA in the posterior segment of the cerebellum in older children; (b) an age‐related improvement of the SOC performance at the most demanding level of five‐move problems; and (c) a mediation role of the lateral cerebellar WM volumes in age‐related improvement in the SOC performance in childhood. These results highlight the differential development of the cerebellum during childhood and provide evidence that brain adaptation to the acquisition of planning ability during childhood could partially be achieved through the engagement of the lateral cerebellum.

01 Aug 00:19

Observation of Complex Time Structures in the Cosmic-Ray Electron and Positron Fluxes with the Alpha Magnetic Spectrometer on the International Space Station

by M. Aguilar et al. (AMS Collaboration)

Author(s): M. Aguilar et al. (AMS Collaboration)

Measurements of the cosmic-ray electron and positron fluxes during periods of high solar activity provide insights into cosmic ray propagation in the Heliosphere.


[Phys. Rev. Lett. 121, 051102] Published Tue Jul 31, 2018

03 Dec 21:57

Default mode network: the seat of literary creativity?

Richard J.S. Wise, Rodrigo M. Braga. Literacy implies convergence, with heard and read narratives directed from separate sensory pathways towards common linguistic and semantic brain systems – very ‘bottom-up’. But we also actively i....