Seung H S
Bell Laboratories, Lucent Technologies, Murray Hill, NJ 07974, USA.
Proc Natl Acad Sci U S A. 1996 Nov 12;93(23):13339-44. doi: 10.1073/pnas.93.23.13339.
The brain can hold the eyes still because it stores a memory of eye position. The brain's memory of horizontal eye position appears to be represented by persistent neural activity in a network known as the neural integrator, which is localized in the brainstem and cerebellum. Existing experimental data are reinterpreted as evidence for an "attractor hypothesis" that the persistent patterns of activity observed in this network form an attractive line of fixed points in its state space. Line attractor dynamics can be produced in linear or nonlinear neural networks by learning mechanisms that precisely tune positive feedback.
大脑能够使眼睛保持静止，因为它存储了眼睛位置的记忆。大脑对水平眼位的记忆似乎由一个名为神经整合器的网络中的持续神经活动来表征，该网络位于脑干和小脑。现有实验数据被重新解释为“吸引子假说”的证据，即在此网络中观察到的持续活动模式在其状态空间中形成了一条有吸引力的固定点线。通过精确调整正反馈的学习机制，线性或非线性神经网络可以产生线吸引子动力学。
