Article
Neurosciences
Monika Graumann, Lara A. Wallenwein, Radoslaw M. Cichy
Summary: This study aimed to investigate the influence of spatial attention on object location representations, and identified processing stages in time and space through EEG and fMRI experiments. The results showed that spatial attention modulated location representations during late processing stages ( > 150 ms, in middle and high ventral visual stream areas) independent of background condition. This study clarified the processing stage at which attention modulates object location representations in the ventral visual stream and demonstrated that attentional modulation is a cognitive process separate from recurrent processes related to the processing of objects on cluttered backgrounds.
Article
Multidisciplinary Sciences
Xiangying Meng, Didhiti Mukherjee, Joseph P. Y. Kao, Patrick O. Kanold
Summary: Early sensory experience can shape subplate circuits before thalamocortical circuits to L4 mature in mice. Peripheral activity sequentially shapes cortical circuits from earlier ages than previously appreciated.
Article
Neurosciences
J. Brendan Ritchie, Haemy Lee Masson, Stefania Bracci, Hans P. Op de Beeck
Summary: Representational similarity analysis (RSA) is a key method in multivariate pattern analysis, focusing on the construction of representational dissimilarity matrices. Multivariate noise normalization (NNM) has been proposed as a method to improve signal estimates for RSA, but its effects are highly variable and caution should be exercised when incorporating it into analysis pipelines.
Article
Neurosciences
Ke Bo, Siyang Yin, Yuelu Liu, Zhenhong Hu, Sreenivasan Meyyappan, Sungkean Kim, Andreas Keil, Mingzhou Ding
Summary: The study found that decoding accuracy for unpleasant versus neutral and pleasant versus neutral images in retinotopic visual areas was significantly above chance level, indicating that affective scenes trigger valence-specific neural representations in these areas, influenced by reentry signals from anterior brain regions.
Article
Multidisciplinary Sciences
Teresa Sylvester, Johanna Liebig, Arthur M. Jacobs
Summary: The study found that 6-9-year-old children and adults show similar neural responses to affective words, with both exhibiting positivity superiority effect. Children showed weaker responses to affective information compared to adults.
SCIENTIFIC REPORTS
(2021)
Article
Neurosciences
Bo Zhang, Fan Wang, Qi Zhang, Yuji Naya
Summary: Our mental representation of egocentric space is influenced by the disproportionate sensory perception of the body. Previous studies have focused on the neural architecture for egocentric representations within the visual field. However, the space representation underlying the body is still unclear. This study used fMRI and MEG to investigate the spatial representation of targets relative to the body and found that the frontoparietal network is more involved in representing left/right targets, while the MTL-parietal network is more involved in retrieving targets behind the participant. MEG data also showed an earlier activation of the MTL-parietal network during target retrieval.
Article
Multidisciplinary Sciences
Tomokazu Tsurugizawa, Ai Taki, Andrew Zalesky, Kazumi Kasahara
Summary: Hand preference is a behavioral expression of brain lateralization. This study used the gPPI approach to investigate functional connectivity changes during single-hand movement in right-hand subjects. The results showed increased functional connectivity in interhemispheric motor-related regions during non-dominant hand movement, while there was no increase during dominant hand movement. Additionally, the combination of GLM and gPPI analysis can more clearly detect hand preference lateralization.
Article
Multidisciplinary Sciences
Christian O. Haeusler, Simon B. Eickhoff, Michael Hanke
Summary: This study investigates the perception of spatial information in naturalistic stimuli and suggests a functional subdivision of the parahippocampal place area (PPA) in the human brain. The activation of PPA correlates with visual spatial information in movies and semantic spatial information in audio descriptions, indicating a generalization of PPA activity.
Article
Multidisciplinary Sciences
Marc M. Himmelberg, Ekin Tuncok, Jesse Gomez, Kalanit Grill-Spector, Marisa Carrasco, Jonathan Winawer
Summary: Adults have better visual performance for stimuli along the horizontal than vertical and lower than upper vertical meridian, which is paralleled by cortical surface area asymmetries in V1. However, children have similar visual performance for the lower and upper vertical meridian, and similar V1 surface area representing them. This suggests a late-stage change in V1 organization that corresponds to the emergence of visual performance asymmetry in adults along the vertical meridian. The study also shows that many features of V1 are adult-like in children, indicating a developmental change in cortical organization.
NATURE COMMUNICATIONS
(2023)
Article
Multidisciplinary Sciences
Sarah K. Meier, Kimberly L. Ray, Juliana C. Mastan, Savannah R. Salvage, Donald A. Robin
Summary: Research on brain-based deception, which has been ongoing for two decades, has identified an interconnected network involving multiple brain regions through the analysis of 45 task-based fMRI studies. The findings suggest that the supramarginal gyrus plays a key role in the sociocognitive process of deception.
Article
Neurosciences
Garikoitz Lerma-Usabiaga, Jonathan Winawer, Brian A. Wandell
Summary: The study investigates accurate estimation of the RF of neuronal populations and its shape, finding that elliptical pRFs are common in the early visual cortex. Researchers also found discrepancies in estimation results using different software packages.
JOURNAL OF NEUROSCIENCE
(2021)
Article
Biology
Jiedong Zhang, Yong Jiang, Yunjie Song, Peng Zhang, Sheng He
Summary: The study revealed consistent spatial tuning to different face parts within specific face-selective regions, with the posterior portion of the right posterior fusiform face area and right occipital face area biased towards eyes, while the anterior portion biased towards mouth and chin stimuli. This systematic spatial tuning within occipital and fusiform face processing regions supports further computation combining different face parts.
Article
Neurosciences
Kimberly A. Aldinger, Zachary Thomson, Ian G. Phelps, Parthiv Haldipur, Mei Deng, Andrew E. Timms, Matthew Hirano, Gabriel Santpere, Charles Roco, Alexander B. Rosenberg, Belen Lorente-Galdos, Forrest O. Gulden, Diana O'Day, Lynne M. Overman, Steven N. Lisgo, Paula Alexandre, Nenad Sestan, Dan Doherty, William B. Dobyns, Georg Seelig, Ian A. Glass, Kathleen J. Millen
Summary: The study systematically mapped the molecular, cellular, and spatial composition of the human fetal cerebellum, revealing differences from the mouse cerebellum and providing insights into human cerebellar development and disease. SPLiT-seq single-nucleus RNA sequencing highlighted complex cell-type dynamics and prolonged maturation in the developing human cerebellum, with important implications for disease research.
NATURE NEUROSCIENCE
(2021)
Article
Neurosciences
Shahin Nasr, David Kleinfeld, Jonathan R. Polimeni
Summary: The study found that different regions within the human V1 cortex interact with each other through correlated fluctuations to represent parts of the same object, showing stronger cross-hemisphere correlations compared to representing parts of different objects. This indicates that global stimulus configuration can affect neuronal processing in V1, independent of specific tasks and local discontinuities within objects.
JOURNAL OF NEUROSCIENCE
(2021)
Article
Neurosciences
Gabriel Pelletier, Nadav Aridan, Lesley K. Fellows, Tom Schonberg
Summary: This study investigates two routes to multiattribute evaluation - assessing the value of whole object based on holistic attribute configuration or summing individual attribute values. Evidence from experiments with healthy human participants showed differences in fixations and transitions between attributes when evaluating novel pseudo objects. The engaged neural substrates, such as ventromedial prefrontal cortex (vmPFC) and perirhinal cortex, vary depending on whether configural processing is required.
JOURNAL OF NEUROSCIENCE
(2021)