Review
Psychology, Clinical
Robin Gerrits
Summary: Many functions of the human brain exhibit asymmetric organization, with left hemisphere dominance for some tasks and right hemisphere dominance for others. However, not everyone follows the typical pattern of hemispheric functional segregation, and there are various forms of departures from this standard division of labor. This article proposes a mechanistic model to explain the observed distribution of segregation phenotypes and generate testable hypotheses.
NEUROPSYCHOLOGY REVIEW
(2022)
Article
Biology
Sebastian Ocklenburg, Yasmin El Basbasse, Felix Stroeckens, Anett Mueller-Alcazar
Summary: Cross-species analysis suggests a positive association between brain mass and rightward limb preferences, indicating that larger-brained species tend to shift towards more right-lateralized individuals. This finding challenges the assumption that conduction delay is the critical factor driving the evolution of hemispheric asymmetries. It highlights the importance of considering the coordination of lateralized responses in social species within the context of hemispheric asymmetry evolution.
COMMUNICATIONS BIOLOGY
(2023)
Article
Metallurgy & Metallurgical Engineering
Zhang Zhuang, Li Haiyang, Zhou Lei, Liu Huasong, Tang Haiyan, Zhang Jiaquan
Summary: This study investigated the spot segregation and banded defects in gear steel blooms, clarifying their correlation and evolution. The experimental results showed that during hot rolling, spot segregation transformed into banded structures, with banded defects sharing similar geometrical location and element distribution patterns with spot segregation.
ACTA METALLURGICA SINICA
(2021)
Article
Neurosciences
Mauro DiNuzzo, Daniele Mascali, Giorgia Bussu, Marta Moraschi, Maria Guidi, Emiliano Macaluso, Silvia Mangia, Federico Giove
Summary: The right hemisphere exhibits stronger activation and connectivity patterns in visuospatial attention than the left hemisphere. The direction of attention significantly modulates the strength of connectivity between brain networks, with leftward attention primarily involving connections between the right visual network and dorsal and ventral attention networks in both hemispheres. Hemispheric functional segregation is significantly correlated with better performance.
HUMAN BRAIN MAPPING
(2022)
Article
Clinical Neurology
Maria Rubega, Massimiliano Facca, Vittorio Curci, Giovanni Sparacino, Franco Molteni, Eleonora Guanziroli, Stefano Masiero, Emanuela Formaggio, Alessandra Del Felice
Summary: Stroke recovery trajectories vary substantially. The need for tracking and prognostic biomarkers in stroke is utmost for prognostic and rehabilitative goals: electroencephalography (EEG) advanced signal analysis may provide useful tools toward this aim.
Article
Clinical Neurology
Gaoding Jia, Guangfang Liu, Haijing Niu
Summary: There is controversy regarding the interaction between the lateralization of visuospatial attention and language production. This study used fNIRS to investigate the lateralization of these two processes and found that they are independent of each other.
FRONTIERS IN NEUROLOGY
(2022)
Article
Neurosciences
Diana C. Perez, Ally Dworetsky, Rodrigo M. Braga, Mark Beeman, Caterina Gratton
Summary: Resting-state fMRI studies have found stable and functionally meaningful divergences in large-scale network organization in individuals. The distribution of these network variants differs across hemispheres, with the right hemisphere showing larger variants along the frontal operculum and medial frontal cortex, and the left hemisphere showing more variants around the TPJ. The asymmetries in network variants have implications for the development of idiosyncratic brain regions and may be connected to lateralized traits.
JOURNAL OF COGNITIVE NEUROSCIENCE
(2023)
Review
Psychology, Biological
Milos Stankovic
Summary: The present review proposes a new dynamic model of brain lateralization in emotional and neutral face perception. Recent studies show that both hemispheres of the brain are capable of processing emotions effectively. The author introduces a hemispheric functional-equivalence model, suggesting that under certain conditions, the brain hemispheres work together to achieve functional balance.
INTERNATIONAL JOURNAL OF PSYCHOPHYSIOLOGY
(2021)
Article
Neuroimaging
Chenhong Fan, Dan Xu, Hao Mei, Xiaoli Zhong, Jinxia Ren, Jiaojiao Ma, Zhao Ruan, Jinfeng Lv, Xitong Liu, Huan Wang, Lei Gao, Haibo Xu
Summary: In this study, we used resting-state functional magnetic resonance imaging to investigate the functional brain asymmetric alterations in patients with severe asymptomatic carotid stenosis (SACS). We found that SACS patients demonstrated asymmetric hemispheric configurations of intrinsic brain activity, as well as decoupling between structural and functional asymmetries. The findings suggest potential brain abnormalities in SACS patients.
BRAIN IMAGING AND BEHAVIOR
(2023)
Article
Biochemistry & Molecular Biology
Jordan E. Norris, Lisa A. DeStefano, Lauren M. Schmitt, Ernest V. Pedapati, Craig A. Erickson, John A. Sweeney, Lauren E. Ethridge
Summary: Fragile X syndrome (FXS) is a neurodevelopmental disorder characterized by intellectual disability, sensory hypersensitivity, executive function difficulties, and social anxiety. This study aimed to investigate the temporal and hemispheric dynamics supporting alpha phenotypes in FXS and their relationship with neural phenotypes related to auditory processing. The findings suggest that individuals with FXS show more differences in alpha power, primarily in the right hemisphere. The study also revealed sex differences in alpha hemisphere outcomes, with males displaying more bursts of alpha activity and females spending longer periods of time in sustained high alpha states.
ACS CHEMICAL NEUROSCIENCE
(2022)
Article
Biochemistry & Molecular Biology
Mattia Pavani, Paolo Bonaiuti, Elena Chiroli, Fridolin Gross, Federica Natali, Francesca Macaluso, Adam Poti, Sebastiano Pasqualato, Zoltan Farkas, Simone Pompei, Marco Cosentino Lagomarsino, Giulia Rancati, David Szuts, Andrea Ciliberto
Summary: Cells with blocked microtubule polymerization can eventually proliferate despite chromosome missegregation, and through laboratory evolution, they can regain the ability to form microtubules and become less sensitive to microtubule-depolymerizing drugs. The study identified recurrently mutated genes, particularly for tubulins and kinesins, as well as duplication of chromosome VIII, which allowed cells to compensate for the original mutation. Analysis revealed a consistent series of events in the development of resistance, indicating the importance of chromosome duplication followed by adaptive mutations in tubulins or kinesins.
Article
Clinical Neurology
Alyssa S. Ailion, Xiaozhen You, Juma S. Mbwana, Eleanor J. Fanto, Manu Krishnamurthy, Chandan J. Vaidya, Leigh N. Sepeta, William D. Gaillard, Madison M. Berl
Summary: This study investigates language resting-state functional connectivity (RS fMRI; FC) in typically developing children and children with epilepsy, and finds that there are differences in the FC of the developing language network based on disease, seizure foci location, and age. For children with epilepsy, FC laterality is associated with their verbal intelligence.
Article
Multidisciplinary Sciences
Jennifer M. Rieser, Tai-De Li, Jessica L. Tingle, Daniel Goldman, Joseph R. Mendelson
Summary: The study reveals an isotropic ventral skin structure in some sidewinding specialist vipers inhabiting sandy deserts, while other snakes exhibit head-to-tail-oriented, micrometer-sized spikes. A mathematical model shows that isotropy enhances sidewinding movement, while anisotropy improves slithering.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Biotechnology & Applied Microbiology
Jakub Czarnecki, Elvira Chapkauskaitse, Julia Bos, Dorota Sentkowska, Pawel Wawrzyniak, Agnieszka Wyszynska, Magdalena Szuplewska, Dariusz Bartosik
Summary: The repABC replication/partitioning loci are widely distributed in extrachromosomal replicons of Alphaproteobacteria, responsible for maintaining different types of replicons. In this study, an atypical partition-related component, the 3parS locus, was functionally analyzed in the P. aminophilus megaplasmid pAMI4. Patterns of parS centromere-like site distribution in different repABC replicons were identified, along with other overlooked 3parS-like loci.
APPLIED AND ENVIRONMENTAL MICROBIOLOGY
(2022)
Article
Astronomy & Astrophysics
Regina Sarmiento, Marc Huertas-Company, Johan H. Knapen, Hector Ibarra-Medel, Annalisa Pillepich, Sebastian F. Sanchez, Alina Boecker
Summary: Modern astronomical observations provide valuable information about nearby galaxies, but they can only capture the present-day state of the Universe. Cosmological simulations allow us to study the past processes that galaxies have undergone. This study aims to connect the past events with present-day galactic properties by using hydro-cosmological simulations to generate a mock MaNGA sample for stellar population analysis.
ASTRONOMY & ASTROPHYSICS
(2023)
