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  1. Geometric changes in monkey V4 and IT neural responses during visual category learning

    Publication
    Behavior changes over the course of learning a task. This behavioral change is due to shifts in neural responses that support improved performance. Here, we investigated how the …

  2. Neural Mechanisms that Make Perceptual Decisions Flexible

    Publication

  3. Bayesian inference with incomplete knowledge explains perceptual confidence and its deviations from accuracy

    Publication
    In perceptual decisions, subjects infer hidden states of the environment based on noisy sensory information. Here we show that both choice and its associated confidence are explained by …

  4. Distinct population code for movement kinematics and changes of ongoing movements in human subthalamic nucleus

    Publication
    The subthalamic nucleus (STN) is theorized to globally suppress movement through connections with downstream basal ganglia structures. Current theories are supported by increased STN activity when subjects withhold …

  5. Representational geometry of perceptual decisions in the monkey parietal cortex

    Publication

  6. Prefrontal cortex represents heuristics that shape choice bias and its integration into future behavior

    Publication
    Goal-directed behavior requires integrating sensory information with prior knowledge about the environment. Behavioral biases that arise from these priors could increase positive outcomes when the priors match …

  7. Decoding and perturbing decision states in real time

    Publication
    In dynamic environments, subjects often integrate multiple samples of a signal and combine them to reach a categorical judgment1. The process of deliberation can be described by a …

  8. Learning probabilistic neural representations with randomly connected circuits

    Publication
    The brain represents and reasons probabilistically about complex stimuli and motor actions using a noisy, spike-based neural code. A key building block for such neural computations, as …

  9. Designing and Interpreting Psychophysical Investigations of Cognition.

    Publication
    Scientific experimentation depends on the artificial control of natural phenomena. The inaccessibility of cognitive processes to direct manipulation can make such control difficult to realize. Here, we discuss …

  10. Psychophysical reverse correlation reflects both sensory and decision-making processes.

    Publication
    Goal-directed behavior depends on both sensory mechanisms that gather information from the outside world and decision-making mechanisms that select appropriate behavior based on that sensory information …