12 Questions
What type of cells contain only AMPA receptors in the synaptic contact with photoreceptors?
Off bipolar cells
Which receptor is involved in the invaginate connections of on bipolar cells?
mGlu6 GPCR
What is the role of inhibitory interneurons close to the axon hillock?
Decrease firing
Which neurotransmitters are involved in horizontal pathway vision?
GABA and Glycine
What is the function of arboreal dendrites in the visual system?
Form gap junctions with on bipolar cells
Which type of gamma-motor neurons causes contraction of intrafusal muscle fibers?
Both types equally
What type of neurons become very responsive to acceleration and deceleration when dynamic gamma-motor neurons are active?
Spindle Ia output neurons
Why does decreased tonic input to motor neurons result in them being less excitable?
Lowers their excitability levels
Which region initiates walking and speed in the central nervous system?
Mesencephalic locomotor region
What is the role of afferent feedback in walking?
Adjusts the pacemaking network
How does stretching of muscles impact muscle activation in the locomotion pattern generator?
Prolongs the swing phase
When would a pace maker neuron trigger a transition from stance to swing phase?
At the very beginning of the swing phase
Test your knowledge on the role of dynamic gamma-motor neurons in signaling muscle length changes and coordinating movement patterns. Learn how feedback and rhythm adjustments are achieved during walking without the need for descending signals. Explore the impact of decreased tonic input on motor neurons.
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