Neurophysiological bases of exponential sensory decay and top-down memory retrieval: A model
Behavioral observations suggest that multiple sensory elements can be maintained for a short time, forming a perceptual buffer which fades after a few hundred milliseconds. Only a subset of this perceptual buffer can be accessed under top-down control and broadcasted to working memory and consciousn...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_16625188_v3_nMAR_p_Zylberberg |
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todo:paper_16625188_v3_nMAR_p_Zylberberg2023-10-03T16:28:54Z Neurophysiological bases of exponential sensory decay and top-down memory retrieval: A model Zylberberg, A. Dehaene, S. Mindlin, G.B. Sigman, M. Attentional blink Attractor networks Dual-task interference Iconic memory Stochastic processes Attentional blinks Attractor networks Behavioral observation Dual-task interference External currents Neuronal dynamics Operational modes Temporal intervals Concretes Experiments Forecasting Random processes Transient analysis Behavioral observations suggest that multiple sensory elements can be maintained for a short time, forming a perceptual buffer which fades after a few hundred milliseconds. Only a subset of this perceptual buffer can be accessed under top-down control and broadcasted to working memory and consciousness. In turn, single-cell studies in awake-behaving monkeys have identified two distinct waves of response to a sensory stimulus: a first transient response largely determined by stimulus properties and a second wave dependent on behavioral relevance, context and learning. Here we propose a simple biophysical scheme which bridges these observations and establishes concrete predictions for neurophsyiological experiments in which the temporal interval between stimulus presentation and top-down allocation is controlled experimentally. Inspired in single-cell observations, the model involves a first transient response and a second stage of amplification and retrieval, which are implemented biophysically by distinct operational modes of the same circuit, regulated by external currents. We explicitly investigated the neuronal dynamics, the memory trace of a presented stimulus and the probability of correct retrieval, when these two stages were bracketed by a temporal gap. The model predicts correctly the dependence of performance with response times in interference experiments suggesting that sensory buffering does not require a specific dedicated mechanism and establishing a direct link between biophysical manipulations and behavioral observations leading to concrete predictions. © 2009 Zylberberg, Dehaene, Mindlin and Sigman. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_16625188_v3_nMAR_p_Zylberberg |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Attentional blink Attractor networks Dual-task interference Iconic memory Stochastic processes Attentional blinks Attractor networks Behavioral observation Dual-task interference External currents Neuronal dynamics Operational modes Temporal intervals Concretes Experiments Forecasting Random processes Transient analysis |
| spellingShingle |
Attentional blink Attractor networks Dual-task interference Iconic memory Stochastic processes Attentional blinks Attractor networks Behavioral observation Dual-task interference External currents Neuronal dynamics Operational modes Temporal intervals Concretes Experiments Forecasting Random processes Transient analysis Zylberberg, A. Dehaene, S. Mindlin, G.B. Sigman, M. Neurophysiological bases of exponential sensory decay and top-down memory retrieval: A model |
| topic_facet |
Attentional blink Attractor networks Dual-task interference Iconic memory Stochastic processes Attentional blinks Attractor networks Behavioral observation Dual-task interference External currents Neuronal dynamics Operational modes Temporal intervals Concretes Experiments Forecasting Random processes Transient analysis |
| description |
Behavioral observations suggest that multiple sensory elements can be maintained for a short time, forming a perceptual buffer which fades after a few hundred milliseconds. Only a subset of this perceptual buffer can be accessed under top-down control and broadcasted to working memory and consciousness. In turn, single-cell studies in awake-behaving monkeys have identified two distinct waves of response to a sensory stimulus: a first transient response largely determined by stimulus properties and a second wave dependent on behavioral relevance, context and learning. Here we propose a simple biophysical scheme which bridges these observations and establishes concrete predictions for neurophsyiological experiments in which the temporal interval between stimulus presentation and top-down allocation is controlled experimentally. Inspired in single-cell observations, the model involves a first transient response and a second stage of amplification and retrieval, which are implemented biophysically by distinct operational modes of the same circuit, regulated by external currents. We explicitly investigated the neuronal dynamics, the memory trace of a presented stimulus and the probability of correct retrieval, when these two stages were bracketed by a temporal gap. The model predicts correctly the dependence of performance with response times in interference experiments suggesting that sensory buffering does not require a specific dedicated mechanism and establishing a direct link between biophysical manipulations and behavioral observations leading to concrete predictions. © 2009 Zylberberg, Dehaene, Mindlin and Sigman. |
| format |
JOUR |
| author |
Zylberberg, A. Dehaene, S. Mindlin, G.B. Sigman, M. |
| author_facet |
Zylberberg, A. Dehaene, S. Mindlin, G.B. Sigman, M. |
| author_sort |
Zylberberg, A. |
| title |
Neurophysiological bases of exponential sensory decay and top-down memory retrieval: A model |
| title_short |
Neurophysiological bases of exponential sensory decay and top-down memory retrieval: A model |
| title_full |
Neurophysiological bases of exponential sensory decay and top-down memory retrieval: A model |
| title_fullStr |
Neurophysiological bases of exponential sensory decay and top-down memory retrieval: A model |
| title_full_unstemmed |
Neurophysiological bases of exponential sensory decay and top-down memory retrieval: A model |
| title_sort |
neurophysiological bases of exponential sensory decay and top-down memory retrieval: a model |
| url |
http://hdl.handle.net/20.500.12110/paper_16625188_v3_nMAR_p_Zylberberg |
| work_keys_str_mv |
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| _version_ |
1807317150851923968 |