Aversive prediction error signals in the amygdala.

McHugh SB., Barkus C., Huber A., Capitão L., Lima J., Lowry JP., Bannerman DM.

Prediction error signals are fundamental to learning. Here, in mice, we show that aversive prediction signals are found in the hemodynamic responses and theta oscillations recorded from the basolateral amygdala. During fear conditioning, amygdala responses evoked by footshock progressively decreased, whereas responses evoked by the auditory cue that predicted footshock concomitantly increased. Unexpected footshock evoked larger amygdala responses than expected footshock. The magnitude of the amygdala response to the footshock predicted behavioral responses the following day. The omission of expected footshock led to a decrease below baseline in the amygdala response suggesting a negative aversive prediction error signal. Thus, in mice, amygdala activity conforms to temporal difference models of aversive learning.

DOI

10.1523/JNEUROSCI.4465-13.2014

Type

Journal article

Journal

J Neurosci

Publication Date

02/07/2014

Volume

34

Pages

9024 - 9033

Keywords

amygdala, fear, hemodynamic, prediction error, theta oscillations, tissue oxygen, Acoustic Stimulation, Amygdala, Animals, Anticipation, Psychological, Avoidance Learning, Conditioning, Classical, Discrimination Learning, Electroshock, Fear, Freezing Reaction, Cataleptic, Hemodynamics, Locomotion, Male, Mice, Mice, Inbred C57BL, Mice, Inbred CBA, Theta Rhythm

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