wobble. Flexibility in the base-pairing rules in which the nucleotide at the 5' end of a tRNA anticodon can form hydrogen bonds with more than one kind of base in the third position (3' end) of a codon.
The conclusion that the amygdala is the brainâs fear center wrongly assumes that the feelings of âfearâ and the responses elicited by threats are products of the same brain system. While amygdala circuits are directly responsible for behavioral/physiological responses elicited by threats, they are not directly responsible for feelings of âfear.â.
Panic disorder sometimes runs in families, but no one knows for sure why some family members have it while others donât. Researchers have found that several parts of the brain, as well as biological processes, play a key role in fear and anxiety.