The human spinal cord circuitry

von Hofstötter, Ursula
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Hofstötter, Ursula The human spinal cord circuitry
Hofstötter, Ursula - The human spinal cord circuitry

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Lieferung: zwischen 2021-06-22 und 2021-06-24
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Beschreibung

Electrical stimulation via electrodes implanted in close distance to the spinal cord generates various types of lower limb muscle activities in paralyzed people. Depending on the stimulation parameters, the activities range from simple reflexes involving a single synapse to stereotyped, rhythmic flexion-extension movements implying the activation of spinal pattern generators. Here, electrophysiological data were analyzed to describe the simplest rhythmicity that can be produced by the spinal cord, i.e. series of monosynaptic reflexes with alternating amplitudes and reciprocity between antagonistic muscles. It is further elaborated how these patterns evolve from non-patterned series of monosynaptic reflexes. Hypotheses on the underlying mechanisms are then tested by biologically realistic network models. The Leaky Integrate-and-Fire model was extended by realistic time courses of postsynaptic events and implemented as a non-linear recursive algorithm simulating spatially and temporally distributed neuronal effects. The significance of the work is the demonstration that simple rhythmic behaviors can be produced by networks involving interneurons outside the spinal pattern generators.

Mitwirkende

Autor:
Hofstötter, Ursula
Minassian, Karen

Weitere Informationen

Biografie:
Ursula Hofstötter, PhD in Technical Mathematics, and Karen Minassian, PhD in Technical Physics, Vienna University of Technology, Austria. Research associates at the Vienna Medical University, Austria. Research interests are the neurosciences of movement recovery in motor disorders and the role of the spinal cord in the neural control of locomotion.
Sprache:
Englisch
Seitenanzahl:
140
Medientyp:
Taschenbuch
Verlag:
LAP Lambert Academic Publishing

Stammdaten

Produkttyp:
Taschenbuch
Verpackungsabmessungen:
0.22 x 0.15 x 0.008 m; 0.254 kg
GTIN:
09783845401379
DUIN:
L8EKSAA19PT
CHF 61.35
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