期刊论文详细信息
Frontiers in Neuroscience | |
Temporal dynamics underlying perceptual decision making: Insights from the interplay between an attractor model and parietal neurophysiology | |
Kong-Fatt Wong1  Alexander C Huk2  | |
[1]Princeton University | |
[2]University of Texas at Austin | |
关键词: attractor neural network; computational modeling; parietal cortex; perceptual decision making; sensorimotor integration; | |
DOI : 10.3389/neuro.01.028.2008 | |
来源: DOAJ |
【 摘 要 】
Recent neurophysiological studies in awake, behaving primates have revealed that neurons in certain brain areas appear to integrate sensory evidence over time during the performance of perceptual decision-making tasks. Neurons in the lateral intraparietal area (LIP) of rhesus monkeys exhibit such decision-related signals while the animals view and judge the direction of a visual motion display. Further investigation of this temporal integration process using brief perturbations of the sensory evidence has suggested that LIP neurons do not integrate evidence in a perfect, linear manner. We describe how a biophysically-plausible attractor network model can account for many aspects of the temporal dynamics of neural activity during these perceptual decisions. We also review a larger set of models and explain how the dynamics during and after temporal integration can help to distinguish the underlying neural mechanisms. Finally, we propose some crucial theoretically-motivated experiments that are needed to test among models.【 授权许可】
Unknown