1,699 research outputs found
Tydelig struktur, quiz og video i Moodle med Erika G. Spaich
No full textOplev, hvordan Erika G. Spaich skaber struktur og variation i sin undervisning med quizzer, videoer og en tydelig opbygning i Moodle. Studerende forbereder sig digitalt og arbejder praktisk i laboratoriet, hvilket styrker læring, medbestemmelse og anvendelse af teori i praksis
Tydelig struktur, quiz og video i Moodle med Erika G. Spaich
No full textOplev, hvordan Erika G. Spaich skaber struktur og variation i sin undervisning med quizzer, videoer og en tydelig opbygning i Moodle. Studerende forbereder sig digitalt og arbejder praktisk i laboratoriet, hvilket styrker læring, medbestemmelse og anvendelse af teori i praksis
Dialogical Skirmishes
Full text linkTan was guest editor for 'And Now China?', a special print edition of the Ctrl+P journal, which critically responded to the celebratory rhetoric’s of ‘China Now’ and other celebratory markers of China's global ascent in 2008. As well as the introductory article 'Dialogical Skirmishes', Tan also interviewed Hans Ulrich Obrist
Modulating effects of bodyweight unloading on the lower limb nociceptive withdrawal reflex during symmetrical stance
No full textObjective: To investigate the effects of bodyweight unloading on the excitability of the nociceptive withdrawal reflex (NWR) and of its receptive fields organisation during quiet stance in humans. Methods: The NWR was elicited in 14 volunteers by electrical stimulation of the sole of the foot at mid-forefoot, arch, and heel points. Participants stood upright and wore a whole-body harness connected via a rope to a pulley. Data were recorded at 0%, 10%, 25% and 40% of the bodyweight unloading. The root mean square of the EMG activity was measured bilaterally from several lower limb muscles. Kinematics of ankle, knee, and hip were measured bilaterally using goniometers. Results: Two-way ANOVA for repeated measures revealed higher reflex sizes at higher degrees of unloading in the tibialis anterior, soleus, and biceps femoris muscles and in the kinematics of the knee joint of the ipsilateral limb. No interaction between stimulation site and unloading was revealed. Conclusions: Unloading induced a generalised enhancement of NWR excitability without modifying the reflex receptive field organisation. Significance: Our study indicates that bodyweight unloading in general enhances the NWR excitability and suggests that only load-related afferent inputs in concert with joint movements may modify the modular organisation of the NWR. © 2011 International Federation of Clinical Neurophysiology
The effect of walking supported by elicitation of the nociceptive withdrawal reflex on the corticospinal pathways
No full textIntroduction: Despite the high incidence of stroke, the mortality following stroke is decreasing [Schmidt et al., 2014]. Increasing number of stroke survivors is causing an increased demand for new rehabilitation techniques improving their quality of life [Bushnell et al., 2014]. One of the most limiting impairments of stroke survivors are gait impairments. Regaining the ability to walk is therefore one of the main goals of the rehabilitation [Olney and Richards, 1996]. New techniques are being proposed and one of them is electrical stimulation on the sole of the foot, which elicits the withdrawal reflex, to initiate and facilitate the swing phase [Spaich et al., 2014]. This technique was found to be effective in rehabilitating gait in stroke patients [Spaich et al., 2014]. However, the effect of the activation of the withdrawal reflex on the cortical and subcortical pathways is unknown. Better understanding of the underlying mechanism could lead to improvements of the treatment. In the present study the effect of walking with electrical activation of the withdrawal reflex on the corticospinal and spinal pathways in healthy subjects was investigated.Methods: A total of 17 healthy participants participated in the experiments. 9 subjects were placed in the intervention group and walked 30 minutes on a treadmill with electrical stimulation on the sole of the foot at heel-off, which activated the withdrawal reflex. 8 subjects were placed in the control group and walked 30 minutes on a treadmill without stimulation. Measurements of corticospinal and spinal excitability were carried out before, immediately after and 30 minutes after treadmill walking. All measurements were recorded from the tibialis anterior (TA). Single pulse TMS (transcranial magnetic stimulation) was used to asses conrticospinal pathways which led to I/O (input/output) curves. The different parameters of the I/O curves were analyzed. Stretch reflexes were mechanically induced to asses spinal excitability. The amplitude and latency of the first and second components of the stretch reflex were analyzed. Two-way repeated measures ANOVA was used to analyze the effect of time and group on the parameters of the I/O curves and on the amplitude and latency of the first two components of the stretch reflex.Results: The rMT (resting motor threshold) showed a significant difference between measurements immediately post and 30 minutes post intervention (3.7 ± 4.4 %). The MEPmax-value of the I/O curve showed a significant decrease immediately post (127,2 ± 206.1 μV) and 30 minutes post (110.6 ± 120.9 μV) intervention compared to the baseline measurements. Other parameters (Slope K, S50) of the I/O curves did not show any significant differences over time. No significant effect of group on any of the outcome measures was found. Analysis of the first component of the stretch reflex showed a significant decrease of the peak amplitude immediately (85,2 ± 93.3 μV) and 30 minutes post (74 ± 70.4 μV) intervention compared to baseline. Analysis of the second component of the stretch reflex showed a significant decrease in peak amplitude between pre and 30 minutes post intervention (108.4 ± 185.3 μV). The latencies of both analyzed stretch reflex components did not show any significant differences over time and no significant difference was found between the groups for any of the outcome measures of the stretch reflex. Conclusion: The study did not found any difference between the two groups for any of the measured outcomes, but did found changes over time for the MEPmax-value of the Boltzmann fit and the first and second component of the stretch reflex. This suggests that treadmill walking itself can modify (decrease) the excitability of corticospinal/spinal pathways. However, due to high inter-subject variability further research on broader sample size is needed to verify or disprove these results
Stimulation site and phase modulation of the withdrawal reflex during gait initiation
No full textOBJECTIVE:
To investigate how the nociceptive withdrawal reflex (NWR) is modulated during gait initiation.
METHODS:
The NWR was elicited in ten subjects using electrical stimulation at four sites in the right foot during symmetrical stance (50% of body weight on each foot) or while performing the first step during gait initiation: either during heel off (HO, 20% of body load on the starting leg) or heel contact (HC, 80% of body load on the starting leg in the first step). Kinematics and EMG responses from major muscles of the ipsilateral leg were recorded.
RESULTS:
The NWR was modulated by stimulation site in all muscles except Soleus. The NWR responses elicited after stimulation of the arch were significantly larger than those evoked at all other sites in Tibialis Anterior, Rectus Femoris, and Vastus Lateralis. At the hip joint, the largest flexion was obtained during HO, whereas the smallest flexion was observed during HC, both following stimulation on the arch of the foot.
CONCLUSIONS:
The NWR responses were modulated to maintain balance and continue the development of the gait initiation process.
SIGNIFICANCE:
The NWR modulation followed a functional principle, which might allow a functional use in rehabilitation strategies
Barb Rosenstock & Erika Meza: Cook Prize 2023, Silver Medal Acceptance Speech
No full textBarb Rosenstock (author) and Erika Meza (illustrator) give an acceptance speech and talk about their book The Mystery of the Monarchs. Published by Alfred A. Knopfhttps://educate.bankstreet.edu/cook/1006/thumbnail.jp
First person – Erika Testa
No full textABSTRACT
First Person is a series of interviews with the first authors of a selection of papers published in Journal of Cell Science, helping early-career researchers promote themselves alongside their papers. Erika Testa is the first author on ‘H2afx and Mdc1 promote maintenance of genomic integrity in male germ cells’, published in Journal of Cell Science. Erika is a PhD student in the lab of Dr Marco Barchi at the University of Rome Tor Vergata, Rome, Italy, investigating meiosis, DNA repair, genome stability of meiotic cells and male fertility.</jats:p
Erika Howsare
No full textPublicity photo submitted by author/presenter for ODU\u27s Annual Literary Festival 2025.https://digitalcommons.odu.edu/litfest_images/1019/thumbnail.jp
Physiotherapists' assessment of relationship between training method and work-related disorder
No full text- …
