Page 66 - Color_Atlas_of_Physiology_5th_Ed._-_A._Despopoulos_2003

B. Spatial summation of stimuli
AP 1 mV
–70 EPSP 1
AP 2 –90
ms
Dendrite
–70
EPSP 2
Neuron (soma) AP 3 –90

–70 EPSP 3
mV Synaptic Transmission II
0 –90
Action potential
–10 (AP A )
Axon
–30 hillock AP A Electrotonic currents
(depolarizing)
–50 Summed EPSP Axon Plate 2.6
–70

–90
0 2 4 6 8 ms

C. Temporal summation of stimuli
AP 1
Dendrite
mV
–70 EPSP 1
–90
Neuron (soma)

AP 2 mV
–70 EPSP 2 0
Action potential
–10 (AP A )
–90
–30 Summed EPSP
Elapsed
time AP A –50
Electrotonic currents
(depolarizing)
–70
–90
0 2 4 6 8 ms
53
Despopoulos, Color Atlas of Physiology © 2003 Thieme
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