A5016527217- Neural dynamics and brain function
- Visual perception and processing mechanisms
- Face Recognition and Perception
- Olfactory and Sensory Function Studies
- Neurobiology and Insect Physiology Research
- Remote Sensing and Land Use
- Optical and Acousto-Optic Technologies
- Neuroscience and Neural Engineering
- Advanced Memory and Neural Computing
- Primate Behavior and Ecology
- Neural Networks and Applications
- Face recognition and analysis
- Visual Attention and Saliency Detection
University of California, Berkeley
2022-2023
California Institute of Technology
2016-2023
Howard Hughes Medical Institute
2016-2020
Mathematical Systems & Solutions (United States)
2020
Neural Analytics (United States)
2020
Biological E (India)
2020
Abstract High-density, integrated silicon electrodes have begun to transform systems neuroscience, by enabling large-scale neural population recordings with single cell resolution. Existing technologies, however, provided limited functionality in nonhuman primate species such as macaques, which offer close models of human cognition and behavior. Here, we report the design, fabrication, performance Neuropixels 1.0-NHP, a high channel count linear electrode array designed enable simultaneous...
A powerful paradigm to identify neural correlates of consciousness is binocular rivalry, wherein a constant visual stimulus evokes varying conscious percept. It has recently been suggested that activity modulations observed during rivalry may represent the act report rather than percept itself. Here, we performed single-unit recordings from face patches in macaque inferotemporal (IT) cortex using no-report which animal’s was inferred eye movements. We found large proportions IT neurons...
The rodent visual system has attracted great interest in recent years due to its experimental tractability, but the fundamental mechanisms used by mouse represent world remain unclear. In primate, researchers have argued from both behavioral and neural evidence that a key step representation is ‘figure-ground segmentation’, delineation of figures as distinct backgrounds. To determine if mice also show signatures figure-ground segmentation, we trained on segmentation task where were defined...
No-report paradigms help to avoid report-related confounds in conscious perception studies. A novel no-report binocular rivalry paradigm by Hesse and Tsao (2020) tracks content using eye position as subjects follow fixation points linked the rivaling stimuli. However, it remains unclear whether perceptual changes arise spontaneously or are induced external factors such shifts saccades. We found an increased probability of switches time-locked point shifts, indicating that some externally...
Segmentation and recognition of objects in a visual scene are two problems that hard to solve separately from each other. When segmenting an ambiguous scene, it is helpful already know the present their shapes. However, for recognizing object clutter, one would like consider its isolated segment alone avoid confounds features other objects. Border-ownership cells (Zhou et al., 2000) appear play important role segmentation, as they signal side-of-figure artificial stimuli. The work explores...
Segmentation, the computation of object boundaries, is one most important steps in intermediate visual processing. Previous studies have reported cells across cortex that are modulated by segmentation features, but functional role these remains unclear. First, it unclear whether encode consistently since used only a limited variety stimulus types. Second, organized into specialized modules or instead randomly scattered cortex: former would lend credence to for putative cells. Here, we...
A fundamental paradigm in neuroscience is the concept of neural coding through tuning functions 1 . According to this idea, neurons encode stimuli fixed mappings stimulus features firing rates. Here, we report that visual can rapidly and coherently change across a population attend whole its parts. We set out investigate longstanding debate concerning whether inferotemporal (IT) cortex uses specialized code for representing specific types objects or it general applies any object. found face...
Abstract The rodent visual system has attracted great interest in recent years due to its experimental tractability, but the fundamental mechanisms used by mouse represent world remain unclear. In primate, researchers have argued from both behavioral and neural evidence that a key step representation is “figure-ground segmentation,” delineation of figures as distinct backgrounds [1–4]. To determine if mice also show signatures figure-ground segmentation, we trained on segmentation task where...
Abstract A powerful paradigm to identify the neural correlates of consciousness is binocular rivalry, wherein a constant visual stimulus evokes varying conscious percept. It has recently been suggested that activity modulations observed during rivalry could represent act report rather than percept itself. Here, we performed single-unit recordings from face patches in macaque inferotemporal (IT) cortex using no-report which animal’s was inferred eye movements. We found high proportions IT...