系列パタンの法則構造と訓練量が消去抵抗に及ぼす効果 (ラット)

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  • Effects of the structure of serial patterns and the amount of training on the resistance to extinction in rats
  • ケイレツ パタン ノ ホウソク コウゾウ ト クンレンリョウ ガ ショウキョ

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The present research investigated the effects of the rule structure of serial patterns and the amount of training on resistance to extinction in rats. Rats were trained in a runway on either of following serial patterns, decreasing (D : 0-14-0-7-0-3-0-1-0 : the numbers indicate the number of food pellets), increasing (I : 0-1-0-3-0-7-0-14-0), or random (R : 0-R-0-R-0-R-0-R-0) series for five days (small training condition : S) or 20days (large training condition : L). These conditions made Groups DS, IS, RS, DL, IL, and RL. Following the acquisition phase, extinction trials were administered. While Groups DS, IS, and RS showed no patterning responses in the acquisition phase and the same degree of resistance to extinction, Groups DL, IL, and RL showed the same degree of remarkable patterning response in acquisition and a different degree of resistance to extinction (RL > DL = IL). The results, especially obtained in the large training condition, are not explained by Capaldi's stimulus-after effect theory that is accepted as an explanation for resistance to extinction. Considering the results mentioned above, it is concluded that the rule structure of serial patterns affects resistance to extinction as well as acquisition performance.

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