A5088062261- Neural dynamics and brain function
- Visual perception and processing mechanisms
- Neural and Behavioral Psychology Studies
- Face Recognition and Perception
- EEG and Brain-Computer Interfaces
- Functional Brain Connectivity Studies
- Neuroscience and Neural Engineering
- Memory and Neural Mechanisms
- Electrochemical Analysis and Applications
- Visual Attention and Saliency Detection
- Neuroscience and Neuropharmacology Research
- Neurobiology and Insect Physiology Research
- Advanced Memory and Neural Computing
- Conducting polymers and applications
- Neurological disorders and treatments
- Electrochemical sensors and biosensors
- Cognitive Science and Mapping
- Decision-Making and Behavioral Economics
- Memory Processes and Influences
- Neural Networks and Applications
- CCD and CMOS Imaging Sensors
- Motor Control and Adaptation
- Multisensory perception and integration
- Cognitive and developmental aspects of mathematical skills
- Retinal Development and Disorders
New York University
2015-2024
University of Azad Jammu and Kashmir
2024
NYU Langone Health
2018-2022
Neuroscience Institute
2021
Weizmann Institute of Science
2019
Institute for Research in Fundamental Sciences
2006-2016
Howard Hughes Medical Institute
2008-2015
Stanford University
2011-2015
Institute of Neurobiology
2013
University of Washington
2008-2013
Decisive Monkeys Decision-making is a central theme in current research cognitive neuroscience. Behavioral protocols have provided an entry into explorations of the neural processes that underlie decision-making. Empirical studies support for diffusion model which information accumulates over time until threshold reached, with noisiness inputs related to decision errors. Kiani and Shadlen (p. 759 ) developed behavioral task study choice certainty identified corresponding neuronal...
Decisions about sensory stimuli are often based on an accumulation of evidence in time. When subjects control stimulus duration, the decision terminates when accumulated reaches a criterion level. Under many natural circumstances and laboratory settings, environment, rather than subject, controls duration. In these it is generally assumed that commit to choice at end stream. Indeed, failure benefit from full stream information interpreted as sign imperfect or memory leak. Contrary...
Our mental representation of object categories is hierarchically organized, and our rapid seemingly effortless categorization ability crucial for daily behavior. Here, we examine responses a large number (>600) neurons in monkey inferior temporal (IT) cortex with (>1,000) natural artificial images. During the recordings, monkeys performed passive fixation task. We found that categorical structure objects represented by pattern activity distributed over cell population. Animate...
Decisions are often based on a combination of new evidence with prior knowledge the probable best choice. Optimal requires about reliability evidence, but in many realistic situations, this is unknown. Here we propose and test novel theory: brain exploits elapsed time during decision formation to combine sensory probability. Elapsed useful because (1) decisions that linger tend arise from less reliable (2) expected accuracy at given depends gathered up point. These regularities allow...
Decisions are accompanied by a degree of confidence that selected option is correct. A sequential sampling framework explains the speed and accuracy decisions extends naturally to decision rendered likely be However, discrepancies between suggest might supported mechanisms dissociated from process. Here we show this discrepancy can arise because simple processing delays. When participants were asked report choice simultaneously, their confidence, reaction time perceptual about motion...
Decision making often involves a tradeoff between speed and accuracy. Previous studies indicate that neural activity in the lateral intraparietal area (LIP) represents gradual accumulation of evidence toward threshold level, or bound, which terminates decision process. The level this bound is hypothesized to mediate speed-accuracy tradeoff. To test this, we recorded from LIP while monkeys performed motion discrimination task two regimes. Surprisingly, terminating levels were similar both...
Episodic recollection entails the conscious remembrance of event details associated with previously encountered stimuli. Recollection depends on both establishment cortical representations features during stimulus encoding and reinstatement these at retrieval. Here, we used multivoxel pattern analyses functional magnetic resonance imaging data to examine how hippocampal activity retrieval drive recollective memory decisions. During encoding, words were face or scene source contexts. At...
Decision-making in a natural environment depends on hierarchy of interacting decision processes. A high-level strategy guides ongoing choices, and the outcomes those choices determine whether or not should change. When right is uncertain, as most settings, feedback becomes ambiguous because negative may be due to limited information bad strategy. Disambiguating cause requires active inference key updating We hypothesize that expected accuracy choice plays crucial rule this inference, setting...
Abstract Goal-directed behavior depends on both sensory mechanisms that gather information from the outside world and decision-making select appropriate based information. Psychophysical reverse correlation is commonly used to quantify how fluctuations of stimuli influence generally believed uncover spatiotemporal weighting functions processes. Here we show correlations also reflect processes can deviate significantly true filters. Specifically, changes decision bound evidence integration...