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Integration within the Nervous System

August 24th, 2009 · No Comments · University

Temporal Summation – in order to produce a reaction, the first stimulus provides a hump for the second to leap off and reach threshold.

Spatial Summation – when there are two connections though a dendrite and the cell body (first provides hump)

Simultaneous Stimulation – two connections though the cell body make it easy to reach threshold

Facilitation – second ESP is larger than the first, then there is residual calcium in the bouton so the next stimulation has more of an action.

Metabotropic Receptors – presynaptic inhibits release

- postsynaptic slows synaptic responses and may not change membrane potential

- possess membrane spanning regions

- response transduced via G-proteins, then second messenger transduction pathways are activated

- change in membrane potential not required

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