Long-term performance and stability of implanted neural interfaces in individuals with lower limb loss.

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.

H and P MR Spectroscopy to Assess Muscle Mitochondrial Dysfunction in Long COVID.

Background Emerging evidence suggests mitochondrial dysfunction may play a role in the fatigue experienced by individuals with post-COVID-19 condition (PCC), commonly called long COVID, which can be assessed using MR spectroscopy. Purpose To compare mitochondrial function between participants with fatigue-predominant PCC and healthy control participants using MR spectroscopy, and to investigate the relationship between MR spectroscopic parameters and fatigue using the 11-item Chalder fatigue questionnaire. Materials and Methods This prospective, observational, single-center study (June 2021 to January 2024) included participants with PCC who reported moderate to severe fatigue, with normal blood test and echocardiographic results, alongside control participants without fatigue symptoms.

Synthesis and crystal structure of sodium (ethane-1,2-di-yl)bis-[(3-meth-oxy-prop-yl)phosphinodi-thiol-ate] octa-hydrate.

The title compound, -poly[[tri-aqua-sodium]-di-μ-aqua-[tri-aqua-sodium]-μ-(ethane-1,2-di-yl)bis-[(3-meth-oxy-prop-yl)phosphinodi-thiol-ato]], [Na(CHOPS)(HO)] , crystallizes in the triclinic space group 1. The dianionic [CHO(CH)P(=S)(S-)CHCHP(=S)(S-)(CH)OCH] ligand fragments are joined by a dicationic [Na(HO)] cluster that includes the oxygen of the meth-oxy-propyl unit of the ligand to form infinite chains.

Direct Prosthesis Force Control with Tactile Feedback May Connect with the Internal Model.

Introduction: Dynamic modulation of grip occurs mainly within the major structures of the brain stem, in parallel with cortical control. This basic, but fundamental level of the brain, is robust to ill-formed feedback and to be useful, it may not require all the perceptual information of feedback we are consciously aware. This makes it viable candidate for using peripheral nerve stimulation (PNS), a form of tactile feedback that conveys intensity and location information of touch well but does not currently reproduce other qualities of natural touch.