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

Area of Science:

• Neuroscience
• Cognitive Psychology
• Rehabilitation Medicine

Background:

• Naming difficulties are frequently reported after traumatic brain injury (TBI).
• Previous research often combined data from acute/chronic and mild/severe TBI groups.
• Little is known about persistent naming deficits in moderate-severe TBI during the chronic recovery phase.

Purpose of the Study:

• To investigate the presence and characteristics of naming impairments in the chronic stage of moderate-severe TBI.
• To enhance the rigor and reproducibility of naming research in TBI populations.
• To utilize a confrontation naming assessment to evaluate chronic TBI-related naming disruptions.

Main Methods:

• Recruited 33 individuals with moderate-severe TBI (chronic stage) and 33 demographically matched noninjured controls (NC).
• Administered the Philadelphia Naming Test (PNT) to all participants.
• Employed mixed-effects logistic regression to analyze naming accuracy differences between groups.

Main Results:

• Participants with TBI demonstrated over 90% accuracy on the PNT.
• Despite high accuracy, individuals with TBI were statistically less likely to correctly name items compared to NC participants.
• Nearly 60% of TBI participants reported persistent word-finding difficulties in everyday life.

Conclusions:

• Naming difficulties persist into the chronic stage of moderate-severe TBI.
• A discrepancy exists between formal naming test performance and self-reported word-finding issues.
• Future research should explore naming deficits in ecologically valid contexts like discourse and conversation for chronic TBI populations.