Using a cognitive architecture with a physiological substrate to represent effects of a psychological stressor on cognition

作者：Dancy Christopher L^*; Ritter Frank E; Berry Keith A; Klein Laura C

来源：Computational and Mathematical Organization Theory, 2015, 21(1): 90-114.

DOI：10.1007/s10588-014-9178-1

• ACT-R cognitive architecture
• Stress
• Physiology
• HumMod
• Mental arithmetic
• Computational model
• Startle response
• Epinephrine

Adding a physiological representation to a cognitive architecture offers an attractive approach to modeling the effects of stress on cognition. We introduce ACT-R/I broken vertical bar, an extended version of the ACT-R cognitive architecture that includes an integrative model of physiology. The extension allows the representation of how physiology and cognition interact. This substrate was used to represent potential effects of a startle response and task-based stress during a mental arithmetic (subtraction) task. We compare predictions from two models loaded into the new hybrid architecture to models previously developed within ACT-R. General behavior differed between models in that the ACT-R/I broken vertical bar models had dynamic declarative memory noise over the course of the task based on varying epinephrine levels. They attempted more subtractions but were less accurate; this more closely matched human performance than the previous ACT-R models. Using ACT-R/I broken vertical bar allows a more tractable integration of current physiological and cognitive perspectives on stress. ACT-R/I broken vertical bar also permits further exploration of the interaction between cognition and physiology, and the emergent effects on behavior caused by the interaction among physiological subsystems. This extension is useful for anyone exploring how the human mind can occur in and be influenced by the physical universe.

• 出版日期2015-3