印第安纳大学神经科学家托马斯·詹姆斯在最新研究中提出，大脑并不存在传统意义上的中央决策系统来指导行为选择1。这一观点挑战了长期以来关于决策如何产生的理解。
詹姆斯在《认知神经科学期刊》2026年第38卷第6期发表的论文《感觉运动机制与决策和行为》中阐述了这一理论1。他指出，传统的决策模型遵循"三明治模型"——先感知信息，再通过认知思考，最后选择行动1。但他认为，这一线性序列并不能准确描述大脑的实际工作方式。
詹姆斯表示："我们的行为感觉像是由基于欲望、信念和意图的决策引起的"1。然而他认为这种直觉理解可能具有误导性。根据詹姆斯的新模型，行为产生于感觉、感觉运动和运动过程的持续交互作用，这些过程可以同时发生并相互反馈，而非按顺序进行1。
詹姆斯得出结论："决策作为心理现象，其定义层次过于抽象，不符合认知神经科学的目标"1。他的研究表明，行为的产生源于大脑、身体与环境之间更为复杂而动态的相互作用。
A neuroscientist at Indiana University has challenged the conventional view that the brain operates a central decision-making system. In a paper published in the Journal of Cognitive Neuroscience, Volume 38, Issue 6, page 1089, on August 25, 2026, Thomas W. James argues that decision-making may not originate from a dedicated neural hub but instead emerges from the continuous interaction between perception, motor processes, the body, and the environment.1
James contends that while "our behavior feels like it is caused by decisions based on desires, beliefs and intentions," this intuitive understanding masks a more complex reality.1 Rather than following the traditional sequential model of perception leading to cognitive thought and then action selection, James proposes that sensory, sensorimotor, and motor processes occur simultaneously and influence one another through feedback loops to generate behavioral choices.1 He concludes that "decision-making as a psychological phenomenon has a definition that is too abstract to be useful for cognitive neuroscience," suggesting that the field must reconceptualize how it understands human choice and action.1
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