Table 2.

BOLD signals in medulla oblongata in response to weak (0.5 mA) electrical stimulation

0.5 mA α-chloralose
Animalβ estimateCluster volume
153.662.20
161.183.08
170.691.76
180.891.76
191.811.76
Mean 1.66 2.11
SEM 0.74 0.26
  • β estimate and cluster volume of the fMRI signal measured in the medulla oblongata in the slice with maximal intensity for animals 15–19. Electric stimulation of the hindlimb was performed using 0.5 mA pulsed currents. A BOLD signal was detected in all animals.