I was reading a paper and got confused by contiguity and contingency. I copied a few sentences. Can anyone explain me these few lines

Pairing-induced LTP requires contiguity between the weak presynaptic stimulation and the postsynaptic depolarization4,7,8,9. Contiguity of the CS and US is not sufficient to produce behavioral learning; in a fear conditioning protocol, the addition of unpaired US presentations, which maintains contiguity but decreases contingency, decreases the strength of the CS–US association

  • $\begingroup$ Welcome to Psychology.SE. Can you please cite the paper you are referring to? $\endgroup$ – Chris Rogers Apr 4 at 18:51
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    $\begingroup$ Have you tried searching for definitions of the words you are unsure about in a dictionary (or just on Google?)? $\endgroup$ – Bryan Krause Apr 4 at 19:37
  • $\begingroup$ Welcome. Can you link the paper and add your own research efforts to determine the meaning of these two terms? $\endgroup$ – AliceD Apr 8 at 7:10

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