Cognitive Inertia and Fixation: Scientific Validation

The phenomenon of DPDR cannot be explained only through subjective experiences. Its stability and recurrence across different individuals indicate the presence of deeper cognitive and neurobiological mechanisms. One of these mechanisms is cognitive inertia, which, in extreme cases, transforms into fixation. Below, we review scientific evidence from different disciplines: cognitive psychology, neuropsychology, network neuroscience, biochemistry, and clinical research.

1. Cognitive inertia as the foundation of fixation

Cognitive inertia refers to the brain’s tendency to hold on to old patterns, even when they are no longer adaptive. It can be viewed as a protective mechanism: the system prefers predictable repetition over the risk of uncertainty. In terms of predictive coding, this means maintaining an outdated perception model, even when sensory data contradict it.

Egner (2024) showed that inertia in task switching (task-set inertia) is linked to delayed updating of cognitive strategies and reduced meta-flexibility.

2. Neuropsychological aspect: impulse rigidity in DPDR

Research on DPDR indicates impairments in attention and task-switching. Patients show slower responses in Stroop and task-switch tests, confirming the hypothesis of reduced flexibility.

Studies (ResearchGate, PMC) demonstrate that DPDR patients exhibit increased cognitive load even in simple switches, pointing to “rigidity” of cognitive impulses.

3. Network neuroscience: balance of integration and segregation

Modern brain research describes cognition as a dynamic balance between network integration and segregation. In optimal functioning, networks flexibly reconfigure to ensure adaptation. However, in DPDR, this balance shifts: networks become excessively segregated, preventing the updating of experience.

Wang et al. (2021, arXiv) and several papers in Frontiers show that disruption of this balance leads to rigid nodes and reduced cognitive diversity.

4. Biochemical perspective: the role of dopamine

The neurochemical foundation of cognitive flexibility is largely tied to the dopaminergic system. PET studies show a direct link between dopamine levels and the ability to perform cognitive switching.

Recent findings (News-Medical, 2023) indicate that dopamine deficiency contributes to stronger cognitive inertia, while optimal levels support flexibility.

5. Clinical aspect: the effectiveness of CBT

Cognitive-behavioral therapy (CBT) has proven effective in treating DPDR, partly due to its impact on cognitive inertia. CBT practices help patients restructure fixed mental constructs and gradually form new connections.

Hunter (2023, tandfonline) and several Zenodo studies confirm that CBT works as a form of “retraining,” allowing the brain to gain experience of safety. With repetition, this experience builds alternative neural pathways that gradually replace the fixation node.

6. Limitations and research gaps

• There is still a lack of longitudinal studies directly linking cognitive inertia and DPDR.
• Most evidence is indirect (by analogy with other disorders or experiments on healthy participants).
• The role of neurotransmitters beyond dopamine (e.g., serotonin, noradrenaline) remains insufficiently studied.

7. Conclusion

Scientific validation confirms that DPDR is not only related to anxiety and stress but also to deep cognitive mechanisms. Cognitive inertia explains why fixation is so persistent. It relies on predictive brain models, network dynamics, and biochemistry. Understanding these processes allows us to build more accurate therapeutic strategies—from sensory practices to CBT—focused on restructuring fixation and restoring dynamic equilibrium.