IEEE Trans Biomed Circuits Syst
Published: December 2018
Developing new tools to better understand disorders of the nervous system, with a goal to more effectively treat them, is an active area of bioelectronic medicine research. Future tools must be flexible and configurable, given the evolving understanding of both neuromodulation mechanisms and how to configure a system for optimal clinical outcomes. We describe a system, the Summit RC+S "neural coprocessor," that attempts to bring the capability and flexibility of a microprocessor to a prosthesis embedded within the nervous system. This paper describes the updated system architecture for the Summit RC+S system, the five custom integrated circuits required for bi-directional neural interfacing, the supporting firmware/software ecosystem, and the verification and validation activities to prepare for human implantation. Emphasis is placed on design changes motivated by experience with the CE-marked Activa PC+S research tool; specifically, enhancement of sense-stim performance for improved bi-directional communication to the nervous system, implementation of rechargeable technology to extend device longevity, and application of MICS-band telemetry for algorithm development and data management. The technology was validated in a chronic treatment paradigm for canines with naturally occurring epilepsy, including free ambulation in the home environment, which represents a typical use case for future human protocols.
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http://dx.doi.org/10.1109/TBCAS.2018.2880148 | DOI Listing |
Int J Psychoanal
December 2024
Independent Researcher.
This article examines the signification of the principle of constancy in Freud's pre-psychoanalytic drafts and papers and in . It is argued that Freud's principle differs from seemingly similar principles proposed by Breuer and Fechner, and that it constitutes an assumption about the maintaining of a constant amount of mobile biophysical energy whose purpose is to return to equilibrium, but, proceeding from the primary functions of discharge (principle of inertia) and accumulation (exigencies of life), to consolidate an asymmetry within the nervous system. This gives rise to a set of quasi-psychological dualisms: an energetic dualism between kinetic and tonic energy; a systemic dualism between impermeable and permeable neurons; and a processual dualism between courses of the excitation with and without the inhibiting influence of the ego.
View Article and Find Full Text PDFAlzheimers Dement
January 2025
Department of Neuroscience, City University of Hong Kong, Hong Kong, Hong Kong.
Introduction: Antisense oligonucleotides (ASOs) have shown promise in reducing amyloid precursor protein (APP) levels in neurons, but their effects in astrocytes, key contributors to neurodegenerative diseases, remain unclear. This study evaluates the efficacy of APP ASOs in astrocytes derived from an individual with Down syndrome (DS), a population at high risk for Alzheimer's disease (AD).
Methods: Human induced pluripotent stem cells (hiPSCs) from a healthy individual and an individual with DS were differentiated into astrocytes.
Neuropsychiatr Dis Treat
January 2025
Department of Rehabilitation Medicine, The Affiliated Taian City Central Hospital of Qingdao University, Taian, 271000, People's Republic of China.
As the aging process accelerates and living conditions improve, central nervous system (CNS) diseases have become a major public health problem. Diseases of the CNS cause not only gray matter damage, which is primarily characterized by the loss of neurons, but also white matter damage. However, most previous studies have focused on grey matter injury (GMI), with fewer studies on white matter injury (WMI).
View Article and Find Full Text PDFWorld J Gastroenterol
January 2025
Department of Radiology, The Affiliated Changzhou Second People's Hospital of Nanjing Medical University, Changzhou Medical Center, Changzhou 213000, Jiangsu Province, China.
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IBRO Neurosci Rep
June 2025
Orthopaedic Center, Affiliated Hospital of Hebei University of Engineering, No.81 Congtai Road, Congtai District, Handan City, Hebei Province 56004, China.
The peripheral nervous system is a complex ecological network, and its injury triggers a series of fine-grained intercellular regulations that play a crucial role in the repair process. The peripheral nervous system is a sophisticated ecological network, and its injury initiates a cascade of intricate intercellular regulatory processes that are instrumental in the repair process. Despite the advent of sophisticated microsurgical techniques, the repair of peripheral nerve injuries frequently proves inadequate, resulting in adverse effects on patients' quality of life.
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