Why the Brain Doesn’t Need Choices to Generate Intent

Key Points:

• Indiana University Professor Tom James challenges the traditional "sandwich model" of decision-making, which views the brain as a linear processor moving from sensory perception, through a discrete cognitive decision stage, to motor action.
• Research reveals no localized neural processes dedicated specifically to decision-making; instead, decisions emerge from simultaneous, circular interactions among sensory, sensorimotor, and motor systems, a process James terms "action selection."
• Decisions are conceptual, nonphysical entities analogous to an object's center of mass—they describe behavior but do not physically cause actions, refuting the idea of a central decision-making controller in the brain.
• James uses a robot model exhibiting complex behavior without internal decision systems to illustrate how apparent decision-making can arise from basic sensorimotor interactions with the environment.
• The study advocates for a shift in cognitive neuroscience toward embodied cognition and ecological psychology methods to better capture the dynamic, circular brain-body-environment loops underlying decision processes.