Article
Multidisciplinary Sciences
Qianli Yang, Edgar Walker, R. James Cotton, Andreas S. Tolias, Xaq Pitkow
Summary: Sensory data about most natural task-relevant variables are entangled with task-irrelevant nuisance variables. The authors present a theoretical framework for quantifying how the brain uses or decodes its nonlinear information which indicates near-optimal nonlinear decoding.
NATURE COMMUNICATIONS
(2021)
Article
Biochemistry & Molecular Biology
Akihiro Funamizu, Fred Marbach, Anthony M. Zador
Summary: This study investigates how non-sensory context influences the activity of neurons in the auditory cortex. The results show that both stimulus and reward expectation modulate the activity of these neurons, although the auditory cortex does not represent sufficient information about these priors to exploit them optimally.
Article
Neurosciences
Georgios A. Keliris, Yibin Shao, Michael C. Schmid, Mark Augath, Nikos K. Logothetis, Stelios M. Smirnakis
Summary: In adult macaque monkeys, the higher order visual areas V2/V3 display significant capacity for topographic reorganization following retinal lesions, exceeding the corresponding capacity of area V1. Neurons inside the lesion projection zone (LPZ) reorganize by receiving input from either the fovea or the peripheral border of the LPZ.
FRONTIERS IN NEUROSCIENCE
(2022)
Article
Neurosciences
Thomas Decramer, Elsie Premereur, Qi Zhu, Wim Van Paesschen, Johannes van Loon, Wim Vanduffel, Jessica Taubert, Peter Janssen, Tom Theys
Summary: The study showed that single neurons in the human visual cortex exhibit selective activity for faces, suggesting the importance of neural mechanisms in human face recognition. This provides crucial experimental evidence linking imaging studies in humans and invasive studies in animal models.
JOURNAL OF NEUROSCIENCE
(2021)
Article
Optics
Zhiquan Yuan, Heming Wang, Peng Liu, Bohan Li, Boqiang Shen, Maodong Gao, Lin Chang, Warren Jin, Avi Feshali, Mario Paniccia, John Bowers, Kerry Vahala
Summary: In this study, we demonstrate a correlated self-heterodyne method capable of accurately measuring frequency noise, with a measurement limit as low as 0.01 Hz(2)/Hz. The method features high intensity noise rejection and low optical power requirements.
Article
Multidisciplinary Sciences
Hagar G. Yamin, Guy Gurevitch, Tomer Gazit, Lavi Shpigelman, Itzhak Fried, Yuval Nir, Yoav Benjamini, Talma Hendler
Summary: By analyzing simultaneous recordings of scalp EEG and unit activity, we found that the average firing activity of two medial temporal lobe areas can be estimated from EEG spectral features. Changes in firing activity in both areas and states can be predicted from scalp EEG frequency modulations.
Article
Multidisciplinary Sciences
MohammadMehdi Kafashan, Anna W. Jaffe, Selmaan N. Chettih, Ramon Nogueira, Inigo Arandia-Romero, Christopher D. Harvey, Ruben Moreno-Bote, Jan Drugowitsch
Summary: Information about the direction of a moving visual stimulus is distributed across hundreds of neurons in mouse primary visual cortex, scaling sub-linearly due to correlated noise. The study predicts that tens of thousands of neurons encode 95% of the information, supporting the idea of a redundant code in the brain.
NATURE COMMUNICATIONS
(2021)
Article
Biology
Sacha Sokoloski, Amir Aschner, Ruben Coen-Cagli
Summary: This paper proposes a response model based on mixture models and exponential families, which can capture the variability and covariability in large-scale neural recordings. Additionally, the model facilitates accurate Bayesian decoding, provides a closed-form expression for the Fisher information, and is compatible with theories of probabilistic population coding.
Article
Neurosciences
Reem Khalil, Cyndi Gonzalez, Shaima Alsuwaidi, Jonathan B. Levitt
Summary: The study found that callosal projections to area 17 are mainly from Suprasylvian area Ssy before eye opening, and from area 18 and Ssy after eye opening. Unlike intrahemispheric projections, there is no laminar reorganization of callosal inputs, with the majority arising from the infragranular layers.
JOURNAL OF COMPARATIVE NEUROLOGY
(2022)
Article
Biology
Amy M. Ni, Chengcheng Huang, Brent Doiron, Marlene R. Cohen, Srdjan Ostojic
Summary: Improvements in perception are often accompanied by decreases in correlated variability in the sensory cortex. This relationship can be explained by observers using a general decoding strategy, instead of optimizing for specific stimuli.
Article
Multidisciplinary Sciences
Lucas R. Trambaiolli, Juliana Tossato, Andre M. Cravo, Claudinei E. Biazoli, Joao R. Sato
Summary: The study demonstrated the possibility of inferring human emotional states using brain signal measurements, specifically with fNIRS signals and a specific classifier. By utilizing a small number of biologically relevant features, significant classification accuracies of emotional states were achieved in a subject-independent manner. Further research is needed to explore better combinations of features and classifiers for improved results in affective decoding.
Article
Neurosciences
Ke Bo, Lihan Cui, Siyang Yin, Zhenhong Hu, Xiangfei Hong, Sungkean Kim, Andreas Keil, Mingzhou Ding
Summary: This study investigates the temporal dynamics of affective scene processing in the brain using simultaneous EEG-fMRI recordings. The results show that perceptual processing of complex scenes begins in early visual cortex within 80 ms, followed by the ventral visual cortex at 100 ms. Affect-specific neural representations start to form between 200-300 ms, supported mainly by occipital and temporal cortices. These representations are stable and last up to 2 seconds, indicating the involvement of distributed brain areas in sustaining affective scene processing.
Article
Engineering, Electrical & Electronic
Haoqing Li, Daniel Medina, Jordi Vila-Valls, Pau Closas
Summary: State estimation is a crucial task in engineering fields, requiring robust nonlinear filtering techniques to handle uncertainties and corrupted models. This study presents a new robust variational-based filtering methodology for detecting and mitigating the impact of outliers, contributing to performance improvement.
IEEE TRANSACTIONS ON SIGNAL PROCESSING
(2021)
Article
Neurosciences
Massieh Moayedi, Nasim Noroozbahari, Georgia Hadjis, Kristy Themelis, Tim V. Salomons, Roger Newport, Jennifer S. Lewis
Summary: The study provides evidence that the extrastriate body area (EBA) is the structural and functional neural substrate for representing body shape and size. Both the volume of EBA and its functional connectivity to the posterior parietal cortex are related to participants' susceptibility to the finger-stretch illusion, suggesting that EBA structure and connectivity encode disturbances in body representation and perception.
HUMAN BRAIN MAPPING
(2021)
Article
Biochemical Research Methods
John M. Brooke, Sebastian S. James, Alejandro Jimenez-Rodriguez, Stuart P. Wilson
Summary: Tessellations, or regular patterns, in natural systems often lead to strong correlations between adjacent patterns without direct information exchange between domains. This effect holds in different boundary shapes and with both linear and nonlinear diffusive terms. The study also demonstrates a method for testing the influence of domain boundaries on pattern formation.
PLOS COMPUTATIONAL BIOLOGY
(2022)
Article
Neurosciences
Eric Avila, Kaushik J. Lakshminarasimhan, Gregory C. DeAngelis, Dora E. Angelaki
Article
Neurosciences
Ramon Nogueira, Nicole E. Peltier, Akiyuki Anzai, Gregory C. DeAngelis, Julio Martinez-Trujillo, Ruben Moreno-Bote
JOURNAL OF NEUROSCIENCE
(2020)
Article
Neurosciences
Shaun L. Cloherty, Jacob L. Yates, Dina Graf, Gregory C. DeAngelis, Jude F. Mitchell
Article
Neurosciences
Kaushik J. Lakshminarasimhan, Eric Avila, Erin Neyhart, Gregory C. DeAngelis, Xaq Pitkow, Dora E. Angelaki
Article
Neurosciences
Ryo Sasaki, Akiyuki Anzai, Dora E. Angelaki, Gregory C. DeAngelis
NATURE NEUROSCIENCE
(2020)
Article
Ophthalmology
Nicole E. Peltier, Dora E. Angelaki, Gregory C. DeAngelis
Article
Neurosciences
Aihua Chen, Fu Zeng, Gregory C. DeAngelis, Dora E. Angelaki
Summary: The activity in the parieto-insular vestibular cortex (PIVC) reflects a dynamically changing combination of sensory and choice signals, with a more balanced representation compared to other regions. Interestingly, there is a negative correlation between heading and choice signals in PIVC during the middle portion of the stimulus epoch.
JOURNAL OF NEUROSCIENCE
(2021)
Article
Neurosciences
Zhe-Xin Xu, Gregory C. DeAngelis
Summary: There are two sources of retinal image motion: objects moving in the world and observer movement. Neurons in the middle temporal (MT) area combine eye velocity and retinal velocity, potentially through a partial coordinate transformation or a multiplicative gain interaction, to compute head-centered object motion and depth information.
JOURNAL OF NEUROSCIENCE
(2022)
Article
Neurosciences
Adam Zaidel, Jean Laurens, Gregory C. DeAngelis, Dora E. Angelaki
Summary: This study found that adult rhesus macaques show little neural plasticity in the lower-level multisensory cortical area MSTd, but exhibit neural plasticity in the higher-level multisensory area VIP. The systematic shifts in VIP tuning curves were observed, reflecting the decision-related component of the population response. The results demonstrate neuronal calibration in single sessions, laying the foundation for understanding multisensory neural plasticity in maintaining accuracy for sensorimotor tasks.
JOURNAL OF NEUROSCIENCE
(2021)
Article
Biology
HyungGoo R. Kim, Dora E. Angelaki, Gregory C. DeAngelis
Summary: The detection of object motion in a scene during self-motion is not well understood. Neurons in the macaque middle temporal area have been found to have incongruent depth tuning for binocular disparity and motion parallax cues, and they play a role in predicting perceptual decisions during the detection of moving objects.
Article
Multidisciplinary Sciences
Ranran L. French, Gregory C. DeAngelis
Summary: An important function of the visual system is to represent 3D scene structure from 2D images. Motion parallax provides depth information, but object motion relative to the scene can complicate depth computation. Our study found that scene-relative object motion can confound depth perception.
SCIENTIFIC REPORTS
(2022)
Article
Neurosciences
Grace F. DiRisio, Yongsoo Ra, Yinghui Qiu, Akiyuki Anzai, Gregory C. DeAngelis
Summary: Smooth eye movements are essential for natural visual processes, and they can be guided by both visual cues and extraretinal signals. This study focuses on how the brain processes and integrates these signals during smooth pursuit eye movements. The researchers investigate the responses of neurons in the MSTd area of rhesus monkeys and find that most neurons have preferences for the direction of eye rotation based on both visual and extraretinal signals. This suggests that area MSTd plays a crucial role in integrating these signals and representing the velocity of smooth eye movements.
JOURNAL OF NEUROSCIENCE
(2023)
Article
Neurosciences
Adam D. Danz, Dora E. Angelaki, Gregory C. DeAngelis
Review
Physiology
Ranran L. French, Gregory C. DeAngelis
CURRENT OPINION IN PHYSIOLOGY
(2020)
Article
Neurosciences
L. Caitlin Elmore, Ari Rosenberg, Gregory C. DeAngelis, Dora E. Angelaki