52 results found
    1. Neuroscience

    Homeostatic reinforcement learning for integrating reward collection and physiological stability

    Mehdi Keramati, Boris Gutkin
    A mathematical model built around the assumption that the desire to maintain internal homeostasis drives the behavior of animals, by affecting their learning processes, can explain many real-world behaviors, including some that might otherwise appear irrational.
    1. Computational and Systems Biology
    2. Neuroscience

    Rats exhibit similar biases in foraging and intertemporal choice tasks

    Gary A Kane et al.
    In both foraging and intertemporal choice tasks, rats prefer immediate rewards to delayed rewards, and this preference can be explained by a form of hyperbolic discounting.
    1. Neuroscience

    A circuit mechanism for decision-making biases and NMDA receptor hypofunction

    Sean Edward Cavanagh et al.
    Ketamine, an NMDA receptor antagonist and experimental model for schizophrenia, produces decision-making deficits in monkeys, which are predicted by a lowering of cortical excitation-inhibition balance in a spiking circuit model.
    1. Computational and Systems Biology
    2. Neuroscience

    Fundamental bound on the persistence and capacity of short-term memory stored as graded persistent activity

    Onur Ozan Koyluoglu et al.
    A fundamental lower-bound on memory recall precision, which declines with storage duration and number of stored items, is derived, and human performance is shown to be well-fit by this theoretical bound.
    1. Neuroscience

    Anatomical and functional organization of the human substantia nigra and its connections

    Yu Zhang et al.
    The human substantia nigra can be parcellated into three subdivisions that subserve emotional, cognitive and somatomotor function.
    1. Neuroscience

    Contributions of local speech encoding and functional connectivity to audio-visual speech perception

    Bruno L Giordano et al.
    Seeing a speaker's face aids comprehension by facilitating functional connectivity between the temporal and frontal lobes.
    1. Neuroscience

    Leave-One-Trial-Out, LOTO, a general approach to link single-trial parameters of cognitive models to neural data

    Sebastian Gluth, Nachshon Meiran
    Leave-One-Trial-Out (LOTO) is a general, efficient and easily implementable approach for inferring trial-by-trial measures of computational model parameters in order to link these measures to neural mechanisms.
    1. Neuroscience

    Dopaminergic neurons write and update memories with cell-type-specific rules

    Yoshinori Aso, Gerald M Rubin
    Building on previous work (Aso et al., 2014a; Aso et al., 2014b), cell-type-specific drivers and optogenetics are used to control the local release of dopamine and reveal that distinct learning rules are implemented in parallel memory units.
    1. Neuroscience

    Ultra-Rapid serial visual presentation reveals dynamics of feedforward and feedback processes in the ventral visual pathway

    Yalda Mohsenzadeh et al.
    Reducing visibility with higher image presentation rates increases recurrent processing demands along the visual processing pathway to resolve object recognition.
    1. Neuroscience

    Stage-dependent remodeling of projections to motor cortex in ALS mouse model revealed by a new variant retrograde-AAV9

    Barbara Commisso et al.
    The projections from discrete areas to motor cortex increase over disease course in motoneuron disease model with selective spatial and temporal patterns.

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