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Towards deep learning with segregated dendrites
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DOI：10.7554/eLife.22901.png)
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摘要
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Deep learning has led to significant advances in artificial intelligence, in part, by adopting strategies motivated by neurophysiology. However, it is unclear whether deep learning could occur in the real brain. Here, we show that a deep learning algorithm that utilizes multi-compartment neurons might help us to understand how the neocortex optimizes cost functions. Like neocortical pyramidal neurons, neurons in our model receive sensory information and higher-order feedback in electrotonically segregated compartments. Thanks to this segregation, neurons in different layers of the network can coordinate synaptic weight updates. As a result, the network learns to categorize images better than a single layer network. Furthermore, we show that our algorithm takes advantage of multilayer architectures to identify useful higher-order representations-the hallmark of deep learning. This work demonstrates that deep learning can be achieved using segregated dendritic compartments, which may help to explain the morphology of neocortical pyramidal neurons.
Keyword:
TIMING-DEPENDENT PLASTICITY
SYNAPTIC PLASTICITY
NEURAL-NETWORKS
VISUAL-CORTEX
CELLULAR MECHANISM
PYRAMIDAL NEURONS
INHIBITION
MODULATION
FEEDBACK
CIRCUITS
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0
论文数:
1.8W
被引数:
16
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A cooperative switch determines the sign of synaptic plasticity in distal dendrites of neocortical pyramidal neurons.png)
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