Introduction: Executive dysfunction occurs in many patients with amyotrophic lateral sclerosis (ALS). but it has not been well studied in primary lateral sclerosis (PLS). The aims of this study were to (1) compare cognitive function in PLS to that in ALS patients. (2) explore the relationship between performance on specific cognitive tests and diffusion tensor imaging (DTI) metrics of... https://www.roneverhart.com/Tiamat-s-Rebuke-East-Non-Ladder/