[Correlation of unit activity of the right and left amygdala in food motivation and emotional stress].
Correlation between activities of neurons in the right and left central nuclei of amygdala of rabbits recorded during quiet wakefulness, after 24-h food deprivation, after satiation and during emotional stress (demonstration of a dog) was studied by plotting crosscorrelation histograms. The histogram peaks shifted from zero were observed in 50-67% cases. In hungry animals, in a greater number of cases (52%), the discharge of a neuron in the left amygdala was the first in a pair, and the discharge of the right neuron was delayed (peaks from 10 to 50 and from 130 to 150 ms). The opposite order of discharges was less frequent (36%). When a rabbit saw a dog, the number of common inputs to neurons increased and the leading role of the right amygdalar neurons grew (57%) due to an increase in inhibitory influences from the right to the left amygdala. In most cases, the interaction between amygdalar neurons occurred at the frequencies of the delta range, predominantly, from 2 to 4 Hz.
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D000339:Affect; D000679:Amygdala / Q000502:physiology*; D000818:Animals; D005518:Food Preferences; D007839:Functional Laterality / Q000502:physiology*; D009042:Motivation; D009474:Neurons / Q000502:physiology; D011817:Rabbits; D014851:Wakefulness / Q000502:physiology