This paper proposes a compact handheld device for magnetically inserting a neural interface into a peripheral nervous system (PNS). Users can pull and hold a flexible peripheral nerve (e.g., sciatic nerve) at the front of the device for the accurate and stable targeting process. The device automatically inserts a neural interface using magnetic impacts that are generated by a miniature motor and a pair of magnets. We investigate the characteristics of the employed mechanism, and present the preliminary experimental results.
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http://dx.doi.org/10.1109/EMBC.2017.8036803 | DOI Listing |
Proc Natl Acad Sci U S A
January 2025
Department of Biology and Biological Engineering, California Institute of Technology, Pasadena, CA 91125.
Cognition relies on transforming sensory inputs into a generalizable understanding of the world. Mirror neurons have been proposed to underlie this process, mapping visual representations of others' actions and sensations onto neurons that mediate our own, providing a conduit for understanding. However, this theory has limitations.
View Article and Find Full Text PDFNat Comput Sci
January 2025
Key Lab of Fabrication Technologies for Integrated Circuits and Key Laboratory of Microelectronic Devices and Integrated Technology, Institute of Microelectronics of the Chinese Academy of Sciences, Beijing, China.
The human brain is a complex spiking neural network (SNN) capable of learning multimodal signals in a zero-shot manner by generalizing existing knowledge. Remarkably, it maintains minimal power consumption through event-based signal propagation. However, replicating the human brain in neuromorphic hardware presents both hardware and software challenges.
View Article and Find Full Text PDFBiomaterials
January 2025
Department of Biomedical Engineering, Case Western Reserve University, Cleveland, OH, United States; Advanced Platform Technology Center, Louis Stokes Cleveland Department of Veterans Affairs Medical Center, Cleveland, OH, United States. Electronic address:
Intracortical microelectrodes (IMEs) are essential for neural signal acquisition in neuroscience and brain-machine interface (BMI) systems, aiding patients with neurological disorders, paralysis, and amputations. However, IMEs often fail to maintain robust signal quality over time, partly due to neuroinflammation caused by vascular damage during insertion. Platelet-inspired nanoparticles (PIN), which possess injury-targeting functions, mimic the adhesion and aggregation of active platelets through conjugated collagen-binding peptides (CBP), von Willebrand Factor-binding peptides (VBP), and fibrinogen-mimetic peptides (FMP).
View Article and Find Full Text PDFColloids Surf B Biointerfaces
January 2025
Centre for Advanced Jet Engineering Technology (CaJET), Key Laboratory of High-efficiency and Clean Mechanical Manufacture (Ministry of Education), National Experimental Teaching Demonstration Center for Mechanical Engineering (Shandong University), School of Mechanical Engineering, Shandong University, Jinan 250061, China.
The in vitro blood-brain barrier (BBB) structures can offer advantages for studying cerebrovascular functions and developing neuroprotective drugs. However, currently developed BBB models are overly simplistic and inadequate for replicating the complex three-dimensional architecture of the in vivo BBB. In this study, a method is introduced for fabricating a three-layer vascular structure exhibiting BBB function using a coaxial extrusion bioprinting technique with a two-layer nozzle.
View Article and Find Full Text PDFJ Neural Eng
January 2025
Biomedical Engineering, Case Western Reserve University, 10900 Euclid Avenue, Cleveland, Ohio, 44106-7078, UNITED STATES.
Objective: High-density nerve cuffs have been successfully utilized to restore somatosensation in individuals with lower-limb loss by interfacing directly with the peripheral nervous system. Elicited sensations via these devices have improved various functional outcomes, including standing balance, walking symmetry, and navigating complex terrains. Deploying neural interfaces in the lower limbs of individuals with limb loss presents unique challenges, particularly due to repetitive muscle contractions and the natural range of motion in the knee and hip joints for transtibial and transfemoral amputees, respectively.
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