Clinical Study Suppression of Face Perception during Saccadic Eye Movements

Lack of awareness of a stimulus briefly presented during saccadic eye movement is known as saccadic omission. Studying the reduced visibility of visual stimuli around the time of saccade-known as saccadic suppression-is a key step to investigate saccadic omission. To date, almost all studies have been focused on the reduced visibility of simple stimuli such as flashes and bars. The extension of the results from simple stimuli to more complex objects has been neglected. In two experimental tasks, we measured the subjective and objective awareness of a briefly presented face stimuli during saccadic eye movement. In the first task, we measured the subjective awareness of the visual stimuli and showed that in most of the trials there is no conscious awareness of the faces. In the second task, we measured objective sensitivity in a two-alternative forced choice (2AFC) face detection task, which demonstrated chance-level performance. Here, we provide the first evidence of complete suppression of complex visual stimuli during the saccadic eye movement

On the Development of a Wearable EEG Monitoring Device for Brain-related Disorders

This paper presents our recent work on the design, implementation, and testing of a portable electroencephalography (EEG) monitoring platform. The ultimate aim of this project is to develop a wearable measurement device that can help patients with brain-related disorders such as epilepsy by predicting the expected seizures before their occurrence. These types of devices are gaining an increasing interest in the domain of instrumentation and measurement due to their non-invasive autonomous operation, customizability, and portability. The proposed platform is composed of a high-sensitivity Analog Front-End (AFE) circuit controlled by a low-power System-on-Chip (SoC) module equipped with Bluetooth Low Energy (BLE). The initial experimental evaluation presented in this paper demonstrates the features of our proposed device which is capable of measuring 5 μV signals and can operate for several days on a rechargeable 3.7 V LiPo battery