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Complex human cognition arises from the integrated processing of multiple brain systems. However, little is known about how brain systems and their interactions might relate to, or perhaps even explain, human cognitive capacities. Here, we address this gap in knowledge by proposing a mechanistic framework linking frontoparietal system activity, default mode system activity, and the interactions between them, with individual differences in working memory capacity. We show that working memory performance depends on the strength of functional interactions between the frontoparietal and default mode systems. We find that this strength is modulated by the activation of two newly described brain regions, and demonstrate that the functional role of these systems is underpinned by structural white matter. Broadly, our study presents a holistic account of how regional activity, functional connections, and structural linkages together support integrative processing across brain systems in order for the brain to execute a complex cognitive process.

Autoimmune diseases are a group of debilitating illnesses that are often idiopathic in nature. The steady rise in the prevalence of these conditions warrants new approaches for diagnosis and treatment. Stimuli‐responsive biomaterials also known as “smart,” “intelligent,” or “recognitive” biomaterials are widely studied for their applications in drug delivery, biosensing, and tissue engineering due to their ability to produce thermal, optical, chemical, or structural changes upon interacting with the biological environment. Studies within the last decade that harness the recognitive capabilities of these biomaterials toward the development of novel detection and treatment options for autoimmune diseases are critically analyzed.