Brain Function Outcomes of Recent and Lifetime Cannabis Use.

Importance: Cannabis use has increased globally, but its effects on brain function are not fully known, highlighting the need to better determine recent and long-term brain activation outcomes of cannabis use.

Objective: To examine the association of lifetime history of heavy cannabis use and recent cannabis use with brain activation across a range of brain functions in a large sample of young adults in the US.

Design, Setting, And Participants: This cross-sectional study used data (2017 release) from the Human Connectome Project (collected between August 2012 and 2015).

Medicare Payment for Calcium Modification Technologies Among Patients Undergoing Percutaneous Coronary Intervention, 2021-2022.

Background: The Centers for Medicare and Medicaid Services (CMS) New Technology Add-on Payment (NTAP) program supports adoption of new, costly medical technologies demonstrating substantial clinical improvement. In 2021, CMS waived the "substantial clinical improvement" criterion for devices designated under the FDA Breakthrough Devices Program (BDP). This study characterized risk-standardized payments associated with hospitalizations in which Medicare beneficiaries received calcium modification during PCI for acute myocardial infarction (AMI) following the adoption of the Shockwave C Coronary Intravascular Lithotripsy (IVL) Catheter (Shockwave Medical) with BDP designation.

Learning (Not) to Know: Examining How White Ignorance Manifests and Functions in White Adolescents' Racial Identity Narratives.

In critical approaches to the study of whiteness, white ignorance refers to systematic and intentional ways of (not) knowing that function to perpetuate racism. The current critical qualitative analysis examines how white ignorance surfaces in the racial identity narratives of white adolescents (N = 69, M = 15.91, SD = 0.

New links between auxin and starch.

Auxin was one of the first plant hormones to be identified, but we are still discovering the roles of this “master” hormone. Here we discuss new evidence that links auxin with the synthesis and accumulation of one of humanity’s staple food ingredients, starch.