Naming Ability in the Chronic Phase of Moderate-Severe Traumatic Brain Injury.

Introduction: Naming difficulties are commonly reported in the acute and subacute stages of recovery of traumatic brain injury (TBI) and across severity levels. Previous studies, however, have used samples of mixed chronicity (acute and chronic) and severity (mild and severe) and then aggregated data across individuals from these distinct groups. Thus, we have little knowledge about the persistence of naming difficulties into the chronic stage of recovery in individuals with moderate-severe TBI.

Semantic Memory, Traumatic Brain Injury, and the Iceberg Effect: What Deficits May Lie Below the Surface?

Purpose: The purpose of this viewpoint was to advocate for increased study of semantic memory ability in traumatic brain injury (TBI).

Method: We review modern conceptualizations of semantic memory and its neural correlates and discuss how common neuroanatomical and cognitive deficits in TBI place this population at an increased risk for semantic disruption. Building on discussions at the 2024 International Cognitive-Communication Disorders Conference, we offer possible explanations for how these disruptions may have been overlooked by our field and offer examples of how semantic memory has been studied in other populations as well as how this work may apply to TBI research.

Five-Membered Rings Create Off-Zero Modes in Nanographene.

The low-energy electronic structure of nanographenes can be tuned through zero-energy π-electron states, typically referred to as zero-modes. Customizable electronic and magnetic structures have been engineered by coupling zero-modes through exchange and hybridization interactions. Manipulation of the of such states, however, has not yet received significant attention.