Patients with Parkinson's disease have been seen to be prone to falling. Balance problems and postural instability have been seen to affect their quality of life. This project aims to understand the relationship between the presence of cognitive loads and reactive stepping performance in Parkinson’s patients. Additionally, it also tests the feasibility of the experimental framework to evaluate reactive stepping performance. This experiment tested Parkinson’s patients performing tasks of varying difficulty levels while having to regain their balance. Acceleration perturbations on a treadmill were used to elicit an intrinsic response in the subjects. This compared gait parameters of the subjects that performed single and dual tasks. The results showed that the presence of a cognitive task had a negative effect on the reactive stepping performance, specifically on the margin of stability and step length. Additionally, there was no effect of changing the difficulty level of the task on reactive stepping performance.

With millions of people living with a disease as restraining as migraines, there are no ways to diagnose them before they occur. In this study, a migraine model using nitroglycerin is used in rats to study the awake brain activity during the migraine state. In an attempt to search for a biomarker for the migraine state, we found multiple deviations in EEG brain activity across different bands. Firstly, there was a clear decrease in power in the delta, beta, alpha, and theta bands. A slight increase in power in the gamma and high frequency bands was also found, which is consistent with other pain-related studies12. Additionally, we searched for a decreased pain threshold in this deviation, in which we concluded that more data analysis is needed to eliminate the multiple potential noise influxes throughout each dataset. However, with this study we did find a clear change in brain activity, but a more detailed analysis will narrow down what this change could mean and how it impacts the migraine state.

The importance and prevalence of health literacy has emerged in part due to continuing changes in the delivery of health care services, creating new responsibilities for patients and their caregivers, which include finding and evaluating information, self-monitoring health status, and understanding financial constraints and obligations. Those with low health literacy are not able to access the same healthcare benefits, nor are they able to maintain a healthier life as they are not as informed about preventative care. Spanish speakers in the U.S. are subject to these outcomes due to their low levels of health literacy, in which they ultimately experience more severe health issues, late-stage diseases, and higher disease burden. This paper is a comprehensive examination of health literacy among Spanish speakers and makes recommendations on policies that could be implemented into the U.S. healthcare system to better accommodate Spanish speakers and help improve their health literacy for the ultimate goal of improving health outcomes and access to healthcare.

The cocktail party effect describes the brain’s natural ability to attend to a specific voice or audio source in a crowded room. Researchers have recently attempted to recreate this ability in hearing aid design using brain signals from invasive electrocorticography electrodes. The present study aims to find neural signatures of auditory attention to achieve this same goal with noninvasive electroencephalographic (EEG) methods. Five human participants participated in an auditory attention task. Participants listened to a series of four syllables followed by a fifth syllable (probe syllable). Participants were instructed to indicate whether or not the probe syllable was one of the four syllables played immediately before the probe syllable. Trials of this task were separated into conditions of playing the syllables in silence (Signal) and in background noise (Signal With Noise), and both behavioral and EEG data were recorded. EEG signals were analyzed with event-related potential and time-frequency analysis methods. The behavioral data indicated that participants performed better on the task during the “Signal” condition, which aligns with the challenges demonstrated in the cocktail party effect. The EEG analysis showed that the alpha band’s (9-13 Hz) inter-trial coherence could potentially indicate characteristics of the attended speech signal. These preliminary results suggest that EEG time-frequency analysis has the potential to reveal the neural signatures of auditory attention, which may allow for the design of a noninvasive, EEG-based hearing aid.

Phoenix Police officers are required to wear Body-Worn Cameras while out on patrol and must have the cameras turned on when interacting with the public. The Body-Worn Camera (BWC) Policy was initially established as a means of accruing evidence and increasing police accountability when in the presence of the public. However, BWC technology has the ability to perform many other useful functions. The information provided by the cameras could be used to reduce the paperwork done by police officers while on duty, thus allowing them to spend more time taking calls from dispatch. The versatility of the body-worn camera and its components also make it an ideal pairing for an electrocardiograph (ECG) device to aid in the health of officers and law enforcement retention.