A5011367374- Neuroscience and Neural Engineering
- Advanced Sensor and Energy Harvesting Materials
- Conducting polymers and applications
- EEG and Brain-Computer Interfaces
- Advanced Memory and Neural Computing
- Neuroscience and Neuropharmacology Research
- Wireless Body Area Networks
- Photoreceptor and optogenetics research
- Wireless Power Transfer Systems
- Brain Tumor Detection and Classification
- Tactile and Sensory Interactions
- Analog and Mixed-Signal Circuit Design
- Stroke Rehabilitation and Recovery
- Nanomaterials and Printing Technologies
- Polydiacetylene-based materials and applications
- Neural dynamics and brain function
- Molecular Communication and Nanonetworks
- Neurological disorders and treatments
Yonsei University
2017-2024
Incheon National University
2022
The development of input device technology in a conformal and stretchable format is important for the advancement various wearable electronics. Herein, we report capacitive touch sensor with good sensing capabilities both contact noncontact modes, enabled by use graphene thin geometry. This can be integrated highly deformable areas human body, such as forearms palms. detects multiple signals acute recordings recognizes distance shape approaching objects before direct made. offers convenient...
This article presents a Gm-C-based continuous-time delta-sigma modulator (CTDSM) for artifact-tolerant neural recording interfaces. We propose the feedback-assisted Gm linearization technique, which is applied to first Gm-C integrator by using resistive feedback digital-to-analog converter (DAC) in parallel degeneration resistor of input Gm. enables process quantization noise, thereby improving range and linearity CTDSM, significantly. An energy-efficient second-order loop filter realized...
Abstract Various electrophysiological and imaging techniques have been studied for the diagnosis treatment of epilepsy. In particular, electrocorticography (ECoG) provides valuable information that can guide clinical patients with Currently, it is necessary to define benefits ECoG in free-moving animals Here, we present results simultaneous recordings multiple cortical sites responsive neurostimulations epilepsy carried out rats. this study, developed a high-density, flexible electrode array...
Miniaturized neural implants for monitoring neurological disorders have been investigated as a promising alternative to the interface patients. However, such rely on physical tethers external hardware data and power transmission, which not only causes tissue damage infection, but also hinders stable in vivo recordings freely behaving animals. To enable non-tethered implants, key feature robust high-fidelity interface, using various wireless technologies reported (Fig. 20.5.1, top-left)...
This article presents a wireless neural implant with body-coupled (BC) data transmission and power delivery for freely behaving animals incorporates precision front end high-quality recordings. The utilizes the body as medium where it only needs small electrodes delivery. An external device patch can then be placed far away from without need precise alignment. Furthermore, four-channel continuous-time delta–sigma modulator (CT- <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...
Intracranial implants for diagnosis and treatment of brain diseases have been developed over the past few decades. However, platform conventional implantable devices still relies on invasive probes bulky sensors in conjunction with large-area craniotomy provides only limited biometric information. Here, an multi-modal sensor array that can be injected through a small hole skull inherently spread out conformal contact cortical surface is reported. The injectable array, composed graphene...
Abstract Penetrating electronics have been used for treating epilepsy, yet their therapeutic effects are debated largely due to the lack of a large‐scale, real‐time, and safe recording/stimulation. Here, proposed technology integrates ultrathin epidural into an electrocorticography array, therein simultaneously sampling brain signals in large area diagnostic purposes delivering electrical pulses treatment. The system is empirically tested record ictal‐like activities thalamocortical network...
Abstract Cortical maps, which are indicative of cognitive status, shaped by the organism’s experience. Previous mapping tools, such as penetrating electrodes and imaging techniques, limited in their ability to be used assess high-resolution brain maps largely owing invasiveness poor spatiotemporal resolution, respectively. In this study, we developed a flexible graphene-based multichannel electrode array for electrocorticography (ECoG) recording, enabled us cortical time- labor-efficient...
Injectable 2D Material-Based Sensor Array Jong-Hyun Ahn and co-workers have developed an implantable sensor array for diagnosing treating brain diseases. This can be injected through a small hole in the skull, providing conformal contact with cortical surface. Composed of graphene electrodes MoS2-based sensors, it record neural activity, stimulate electrically, monitor intracranial temperature pressure. More details found article number 2400261.
Abstract Various electrophysiological and imaging techniques have been studied for the diagnosis treatment of epilepsy. In particular, electrocorticography (ECoG) provides valuable information that can guide clinical in patients with To date, it is necessary to define benefits ECoG free-moving animals Here, we present results simultaneous recordings multiple cortical sites responsive neurostimulations epilepsy carried out rats. this study, developed a high-density, flexible electrode array...
In article number 1801732, Sungchil Yang, Jong-Hyun Ahn, Sunggu and co-workers present an approach of diagnostic therapeutic epidural electronics. Ultrathin graphene electrodes are integrated into electrocorticography (ECoG) array, therein simultaneously sampling brain signals in a large area for purposes, delivery electrical pulses treatment epilepsy.