Clinical assessment of brain function relies heavily on indirect behavior-based tests. Unfortunately, behavior-based assessments are subjective and therefore susceptible to several confounding factors. Event-related brain potentials (ERPs), derived from electroencephalography (EEG), are often used to provide objective, physiological measures of brain function. Historically, ERPs have been characterized extensively within research settings, with limited but growing clinical applications. Over the past 20 years, we have developed clinical ERP applications for the evaluation of functional status following serious injury and/or disease. This work has identified an important gap: the need for a clinically accessible framework to evaluate ERP measures. Crucially, this enables baseline measures before brain dysfunction occurs, and might enable the routine collection of brain function metrics in the future much like blood pressure measures today. Here, we propose such a framework for extracting specific ERPs as potential “brain vital signs.” This framework enabled the translation/transformation of complex ERP data into accessible metrics of brain function for wider clinical utilization. To formalize the framework, three essential ERPs were selected as initial indicators: (1) the auditory N100 (Auditory sensation); (2) the auditory oddball P300 (Basic attention); and (3) the auditory speech processing N400 (Cognitive processing). First step validation was conducted on healthy younger and older adults (age range: 22–82 years). Results confirmed specific ERPs at the individual level (86.81–98.96%), verified predictable age-related differences (P300 latency delays in older adults, p < 0.05), and demonstrated successful linear transformation into the proposed brain vital sign (BVS) framework (basic attention latency sub-component of BVS framework reflects delays in older adults, p < 0.05). The findings represent an initial critical step in developing, extracting, and characterizing ERPs as vital signs, critical for subsequent evaluation of dysfunction in conditions like concussion and/or dementia.
Using a longitudinal case study design, we have tracked the recovery of motor function following severe traumatic brain injury (TBI) through a multimodal neuroimaging approach. In 2006, Canadian Soldier Captain (retired) Trevor Greene (TG) was attacked with an axe to the head while on tour in Afghanistan. TG continues intensive daily rehabilitation, which recently included the integration of physical therapy (PT) with neuromodulation using translingual neurostimulation (TLNS) to facilitate neuroplasticity. Recent findings with PT + TLNS demonstrated that recovery of motor function occurred beyond conventional time limits, currently extending past 14-years post-injury. To investigate whether PT + TLNS similarly resulted in associated cognitive function improvements, we examined event-related potentials (ERPs) with the brain vital signs framework. In parallel with motor function improvements, brain vital signs detected significant increases in basic attention (as measured by P300 response amplitude) and cognitive processing (as measured by contextual N400 response amplitude). These objective cognitive improvements corresponded with TG’s self-reported improvements, including a noteworthy and consistent reduction in ongoing symptoms of post-traumatic stress disorder (PTSD). The findings provide valuable insight into the potential importance of non-invasive neuromodulation in cognitive rehabilitation, in addition to initial indications for physical rehabilitation.
Background Adopting a better understanding of how both older adults and health care providers view the community management of frailty is necessary for improving home health, especially facing the coronavirus disease 2019 (COVID‐19) pandemic. We conducted a qualitative focus group study to assess how both older adults and health care providers view frailty and virtual health care in home health. Methods Two focus groups enrolled home‐living older adults and health care professionals, respectively (n = 15). Questions targeting the use of virtual / telehealth technologies in‐home care for frail older adults were administered at audio‐recorded group interviews. Transcribed discussions were coded and analyzed using NVivo software. Results The older adult group emphasized the autonomy related to increasing frailty and social isolation and the need for transparent dissemination of health care planning. They were optimistic about remote technology‐based supports and suggested that telehealth / health‐monitoring/tracking were in high demand. Health care professionals emphasized the importance of a holistic biopsychosocial approach to frailty management. They highlighted the need for standardized early assessment and management of frailty. Conclusions The integrated perspectives provided an updated understanding of what older adults and practitioners value in home‐living supports. This knowledge is helpful to advancing virtual home care, providing better care for frail individuals with complex health care needs.
Frailty and the decline in ability to maintain independent living may be forestalled through discussions with healthcare providers and seniors about managing health at home. In addition, the use of technology in supplementing doctors’ visits to assess frailty progression may be easily adopted by some but not others. We conducted this qualitative study to elucidate the context in which seniors access care at home and current barriers to independent living, from the perspectives of both seniors and practitioners. Pre-approved discussion questions were administered to two audio-recorded focus group sessions of 14 participants. The first group were community-dwelling older adults and informal caregivers, while the second consisted of healthcare practitioners. Group members were sampled to include a range of health backgrounds and levels of technological expertise. Thematic analysis with NVivo Software was used to parse out key discussion topics from the audio transcripts. The caregiver/patient group emphasized the stigma of frailty and age-related isolation, desiring transparency and advocacy from care teams. Practitioners/researchers discussed the importance of a holistic biopsychosocial approach to frailty management and the need for standardized frailty measurement. Patients/caregivers used health-tracking devices at home and were more optimistic about telehealth/video-conferencing than practitioners. Awareness of contextual factors surrounding “aging in place” and what aspects of care are valued by patients and practitioners is key to advancing home health and paving the way for new evidence-based services in the home.
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