The plantar cushion reflex circuit: an oligosynaptic cutaneous reflex

Testing the plantar reflex.

Conditioned Reflex Mimic Circuit Design

Neural network holds great promise to be the next generation computer for the sake of its strong capacity of massive parallel processing, good capability of discerning, compatibility with analog computing, self-learning ability, and so on. In this course project, I designed a basic biological function unit cell, which can mimic one basic biological conditioned reflex function in two versions: c...

Modulation of oligosynaptic cutaneous and muscle afferent reflex pathways during fictive locomotion and scratching in the cat.

We have compared state-dependent transmission through oligosynaptic (minimally disynaptic) reflex pathways from low-threshold cutaneous and muscle afferents to some flexor and extensor lumbosacral motoneurons during fictive locomotion and scratching in decerebrate unanesthetized cats. As reported in earlier work, oligosynaptic cutaneous excitatory postsynaptic potentials (EPSPs) in flexor digit...

Development of the monosynaptic stretch reflex circuit.

Significant advances have been made during the past few years in our understanding of how the spinal monosynaptic reflex develops. Transcription factors in the Neurogenin, Runt, ETS, and LIM families control sequential steps of the specification of various subtypes of dorsal root ganglia sensory neurons. The initiation of muscle spindle differentiation requires neuregulin 1, derived from Ia aff...

Plantar cutaneous afferents normalize the reflex modulation patterns during stepping in chronic human spinal cord injury.

Plantar cutaneous afferent transmission is critical for recovery of locomotion in spinalized animals, whereas a phase-dependent reflex modulation is apparent during fictive or real locomotion. In nine people with a chronic spinal cord injury (SCI) the effects of foot sole stimulation on the soleus H-reflex and tibialis anterior (TA) flexion reflex modulation patterns during assisted stepping we...