Familiar voices and magnetic stimulation being tested in clinical trials for traumatic brain injury
Researchers are testing whether familiar voices and transcranial magnetic stimulation can help patients with disorders of consciousness recover awareness and responsiveness.
We have all seen the same scene in television dramas and films: a patient lies unresponsive in a hospital bed while friends and family sit nearby, reading, talking or playing recordings in the hope that something will trigger a response. For Theresa Louise‑Bender Pape, a speech pathologist and neuroscientist who studies traumatic brain injury (TBI) and disorders of consciousness, that familiar instinct is worth rigorous investigation. She does not accept “it can’t hurt” as sufficient justification—she wants clear, evidence‑based answers.
Pape divides her time between clinical work at the Hines VA Hospital in Illinois and research for the U.S. Department of Veterans Affairs in Washington, D.C., while also holding an academic appointment at Northwestern University’s Feinberg School of Medicine. Her research focuses on developing scalable, low‑cost interventions to stimulate arousal and cognitive engagement in patients who are in vegetative or minimally conscious states after traumatic brain injury. Many of these patients—veterans, civilians and others—often receive little or no rehabilitation after acute care, sometimes moving straight to long‑term care without therapies aimed at restoring awareness.
Driven by the hope of seeing patients regain meaningful interaction, Pape leads two innovative clinical trials supported in part by the VA Rehabilitation Research and Development Service. One trial evaluates the effects of familiar voices and autobiographical stories on brain activity and bedside behavior. The other tests transcranial magnetic stimulation (TMS), a noninvasive method that uses magnetic pulses to activate neuronal circuits.
The familiar‑voice trial is a randomized, double‑blind study that depends heavily on family members and loved ones. Researchers begin by using functional MRI (fMRI) to identify how a patient’s brain responds to different auditory stimuli—familiar voices, unfamiliar voices, short narratives and nonverbal sounds. Based on those baseline measures, relatives record stories that recreate shared experiences, including sensory details and vivid adjectives that might help the listener visualize motion or context.
Participants receive the voice‑based intervention at the bedside: four ten‑minute listening sessions per day, seven days a week, for six weeks. Clinicians assess outcomes with standardized bedside neurobehavioral measures, along with follow‑up fMRI and diffusion tensor imaging (DTI) to look for changes in brain activation and connectivity. The goal is to determine whether behavioral improvements correlate with measurable neural changes and whether familiar, personally relevant auditory stimulation can help re‑engage networks responsible for arousal and attention.
To date, Pape has enrolled 13 participants—primarily men, including veterans—and aims to recruit up to 45. A sizable portion of the study population receives care in nursing homes, so one explicit aim of the trial is to create a low‑resource, easily administered therapy that can be used in community and long‑term care settings as well as hospitals.
The second study explores transcranial magnetic stimulation (TMS) in hospitalized patients who receive continuous medical supervision. TMS delivers brief, focused magnetic pulses through a figure‑of‑eight coil placed on the scalp. Those pulses induce small electric currents in targeted brain regions, which can transiently increase neuronal firing and potentially strengthen communication between cortical areas and deeper structures like the thalamus and brainstem—regions that play central roles in maintaining wakefulness and consciousness.
In this trial, patients undergo repeated daily stimulation sessions over a treatment course. Early results are preliminary but encouraging: two participants completed 30 TMS sessions, with both showing improvements in clinical state. One patient moved from a vegetative state to a minimally conscious state; another progressed to a more conscious level after the treatment and, following discharge into rehabilitative care and adjustments to medication, demonstrated further gains, including sitting up and conversational responses on readmission.
Pape emphasizes that these findings are early and require replication in larger samples, but they point to the potential for combining behavioral, sensory‑based therapies with neuromodulation to promote recovery in disorders of consciousness. Her work seeks not only measurable clinical benefit but also practical solutions—therapies that families, therapists and nursing staff can apply at the bedside without prohibitive cost or infrastructure.
Pape presented this research during a symposium on traumatic brain injury at the Annual Meeting of the American Association of Anatomists, held in conjunction with the Experimental Biology conference. Her presentation was followed by additional talks from researchers exploring related neurorehabilitation approaches.
Notes about this neuroscience article
Contact: Angela Hopp – Federation of American Societies for Experimental Biology
Source: Federation of American Societies for Experimental Biology — Press Release
