Hameroff Stuart
Department of Anesthesiology, Center for Consciousness Studies, University of Arizona, Tucson, AZ 85724, USA.
J Biol Phys. 2010 Jan;36(1):71-93. doi: 10.1007/s10867-009-9148-x.
Cognitive brain functions including sensory processing and control of behavior are understood as "neurocomputation" in axonal-dendritic synaptic networks of "integrate-and-fire" neurons. Cognitive neurocomputation with consciousness is accompanied by 30- to 90-Hz gamma synchrony electroencephalography (EEG), and non-conscious neurocomputation is not. Gamma synchrony EEG derives largely from neuronal groups linked by dendritic-dendritic gap junctions, forming transient syncytia ("dendritic webs") in input/integration layers oriented sideways to axonal-dendritic neurocomputational flow. As gap junctions open and close, a gamma-synchronized dendritic web can rapidly change topology and move through the brain as a spatiotemporal envelope performing collective integration and volitional choices correlating with consciousness. The "conscious pilot" is a metaphorical description for a mobile gamma-synchronized dendritic web as vehicle for a conscious agent/pilot which experiences and assumes control of otherwise non-conscious auto-pilot neurocomputation.
包括感觉处理和行为控制在内的认知脑功能在“整合并激发”神经元的轴突-树突突触网络中被理解为“神经计算”。有意识的认知神经计算伴随着30至90赫兹的伽马同步脑电图(EEG),无意识的神经计算则不然。伽马同步脑电图主要源自通过树突-树突缝隙连接相连的神经元群,在与轴突-树突神经计算流方向垂直的输入/整合层中形成瞬态合体(“树突网”)。随着缝隙连接的打开和关闭,一个伽马同步的树突网可以迅速改变拓扑结构,并作为一个时空包络在大脑中移动,执行与意识相关的集体整合和意志选择。“有意识的驾驶员”是对移动的伽马同步树突网的一种隐喻描述,它是有意识主体/驾驶员的载体,该主体体验并控制原本无意识的自动驾驶神经计算。