Imagining Speeds up the Effect of Motor Imagery on Central Motor Conduction Time.

Introduction: Although motor imagery (MI) has been reported to increase motor cortical excitability, its effect on central motor conduction time (CMCT), a widely used neurophysiological diagnostic method, has not been investigated. In this study, we sought to determine the effect of MI on CMCT.

Methods: In this cross-sectional study, 21 healthy volunteers (11 females, 10 males) aged 24 to 67 years (mean age: 38.

Median nerve conduction study findings in various arm positions.

Objectives: To investigate the effects of various arm positions on median nerve conduction studies (NCSs).

Methods: This prospective cohort study, conducted at Adana City Training and Research Hospital between January and July 2023, included 20 healthy participants. Median NCSs were performed on the participants in three different standing positions with the elbow as the stimulation point: 1) with the arm adducted (P1), 2) with the arm anteflexed (P2), and 3) with the arm raised upwards (P3).

Exploring the effect of the nerve conduction distance on the MScanFit method ofmotor unit number estimation (MUNE).

Objective: MScanFit motor unit number estimation (MUNE) is a sensitive method for detecting motor unit loss and has demonstrated high reproducibility in various settings. In this study, our aim was to assess the outputs of this method when the nerve conduction distance is increased.

Methods: MScanFit recordings were obtained from the abductor digiti minimi muscle of 20 healthy volunteers.

Long-interval afferent inhibition measurement using two different methods: Normative values, repeatability and reliability.

Background: The mechanism of Short-Latency Afferent Inhibition (SAI) is relatively well understood. In contrast, Long-Latency Afferent Inhibition (LAI) has not been as extensively studied as SAI, and its underlying mechanism remains unclear.

Objective/hypothesis: This study had two primary objectives: first, to determine the optimal ISIs for LAI measured by amplitude changes (A-LAI) using high-resolution ISI ranges; and second, to compare measurements of LAI by threshold-tracking (T-LAI).

Feasibility and reliability of MScanFit motor unit number estimation in peroneus longus muscle.

Introduction/aims: Motor unit number estimation (MUNE) methods may be valuable to detect motor involvement earlier than compound muscle action potential (CMAP) amplitude. The most recent MUNE method, MScanFit, has been shown to have advantages compared with previously described methods. However, MScanFit has only been applied in a few lower extremity muscles.

Estimating the motor unit number of the flexor carpi ulnaris muscle with MScanFit MUNE.

Introduction/aims: MScanFit motor unit number estimation (MUNE) is a promising method for motor unit estimation and is reported to have good reliability in distal and small muscles. In this study, we investigated the reliability of MScanFit MUNE in a proximal forearm muscle, the flexor carpi ulnaris.

Methods: Twenty healthy volunteers were included in this study, and 15 participants were re-evaluated in a second session.

Short latency afferent inhibition: comparison between threshold-tracking and conventional amplitude recording methods.

Short-latency afferent inhibition (SAI), which is conventionally measured as a reduction in motor evoked potential amplitude (A-SAI), is of clinical interest as a potential biomarker for cognitive impairment. Since threshold-tracking has some advantages for clinical studies of short-interval cortical inhibition, we have compared A-SAI with a threshold-tracking alternative method (T-SAI). In the T-SAI method, inhibition was calculated by tracking the required TMS intensity for the targeted MEP amplitude (200 uV) both for the test (TMS only) and paired (TMS and peripheral stimulation) stimuli.

Body ownership, sensorimotor integration and motor cortical excitability: A TMS study about rubber hand illusion.

Objective: The Rubber Hand Illusion (RHI) manipulates body ownership experimentally and helps investigate the related neurophysiological processes. This study aimed to evaluate motor cortex excitability that hypothesized changed due to illusion.

Method: Twenty-one healthy (twelve male, nine female), right-handed volunteers aged between 25 and 50 years were recruited to the study.

Monocyte to high-density lipoprotein cholesterol ratio is associated with the presence of carotid artery disease in acute ischemic stroke.

Monocyte to high-density lipoprotein cholesterol ratio (MHR) has recently emerged as a predictor of cardio-cerebrovascular diseases. Since around one-fifth of strokes are linked to atherosclerosis carotid artery, we aimed to present the relationship between carotid artery disease (CAD) and MHR value in acute ischemic stroke (AIS). A total of 209 adult AIS patients analyzed.

Reduced Short-Latency Afferent Inhibition Indicates Impaired Sensorimotor Integrity During Migraine Attacks.

Background And Objective: Migraine attacks disrupt sensory information processing and may also disturb sensorimotor integration. This prospective pilot study aimed to assess the sensorimotor integration and inhibitory circuitry in the sensorimotor cortex using short-latency afferent inhibition (SAI) paradigm in migraine.

Methods: Twenty-five migraine without aura patients (10 interictal, 5 preictal, 10 ictal) and 16 healthy controls were enrolled.

The effect of the anodal transcranial direct current stimulation over the cerebellum on the motor cortex excitability.

This study was designed to investigate whether the cerebellum has an inhibitory effect on motor cortical excitability. Sixteen healthy adults (age range, 25-50 years, five female) participated in the study. Anodal cerebellar transcranial direct current stimulation (a-cTDCS) was used to modulate cerebellar excitability.