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Effect of delay interval on classical eyeblink conditioning in 5-month-old human infants

Journal Article


Abstract


  • Associative learning was evaluated in human infants with simple delay classical eyeblink conditioning. A tone conditioned stimulus (CS) was paired with an airpuff unconditioned stimulus (US) at three different delay intervals (250, 650, and 1,250 ms). Independent groups of healthy, full-term 5-month-old human infants were assigned to these three paired conditions and received two identical training sessions 1 week apart. The two longer delays resulted in associative conditioning, as confirmed by comparison with unpaired control groups. However, only at the 650-ms delay were associative eyeblinks adaptively timed to avoid the airpuff. The delay function at 5 months of age appears much sharper than is observed in adults. Together with the findings of A. H. Little, L. P. Lipsitt, and C. Rovee-Collier (1984), the present study suggests a downward shift in the optimal delay interval for associative eyeblink conditioning between 1 and 6 months of age. However, this delay remains longer than what is typically reported in adults.

Publication Date


  • 2002

Citation


  • Klaflin, D. I., Stanton, M. E., Herbert, J., Greer, J., & Eckerman, C. O. (2002). Effect of delay interval on classical eyeblink conditioning in 5-month-old human infants. Developmental Psychobiology, 41(4), 329-340. doi:10.1002/dev.10050

Scopus Eid


  • 2-s2.0-0036445507

Start Page


  • 329

End Page


  • 340

Volume


  • 41

Issue


  • 4

Abstract


  • Associative learning was evaluated in human infants with simple delay classical eyeblink conditioning. A tone conditioned stimulus (CS) was paired with an airpuff unconditioned stimulus (US) at three different delay intervals (250, 650, and 1,250 ms). Independent groups of healthy, full-term 5-month-old human infants were assigned to these three paired conditions and received two identical training sessions 1 week apart. The two longer delays resulted in associative conditioning, as confirmed by comparison with unpaired control groups. However, only at the 650-ms delay were associative eyeblinks adaptively timed to avoid the airpuff. The delay function at 5 months of age appears much sharper than is observed in adults. Together with the findings of A. H. Little, L. P. Lipsitt, and C. Rovee-Collier (1984), the present study suggests a downward shift in the optimal delay interval for associative eyeblink conditioning between 1 and 6 months of age. However, this delay remains longer than what is typically reported in adults.

Publication Date


  • 2002

Citation


  • Klaflin, D. I., Stanton, M. E., Herbert, J., Greer, J., & Eckerman, C. O. (2002). Effect of delay interval on classical eyeblink conditioning in 5-month-old human infants. Developmental Psychobiology, 41(4), 329-340. doi:10.1002/dev.10050

Scopus Eid


  • 2-s2.0-0036445507

Start Page


  • 329

End Page


  • 340

Volume


  • 41

Issue


  • 4