| Autor: |
Siddle, David A.T., Remington, Bob, Kuiack, Marg, Haines, Erica |
| Předmět: |
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| Zdroj: |
Psychophysiology; Mar1983, Vol. 20 Issue 2, p136-145, 10p |
| Abstrakt: |
Three experiments investigated the effects on the skin conductance response of S2 omission following 15 S1-S2 presentations. These effects were examined at omission and on the following S1-S2 (re-presentation) trial. In Experiment I (N = 36), S1 was a 5-sec slide of a snake and S2 was I sec of either 65 or 105 dB white noise. The S1-S2 interval was 4 sec. Both frequency and amplitude of omission responses were a positive function of S2 intensity, and responding to S2 re-presentation was reliably higher than on the preomission trial. Experiment 2 (N = 36) used the same S1, an S2 of 105dB, and two additional groups which controlled for stimulus omission and spontaneous recovery. Omission of S2 again produced increased responding to its re-presentation. In Experiment 3 (N= 72), S1 and S2 were moderately intense tones (80dB) and lights (1089 cd/cm[SUB2]). The procedure for the experimental and two control groups was essentially the same as in Experiment 2, except that S1 modality was counterbalanced across subjects. The experimental group displayed significantly larger responses to S2 on the re-presentation trial than the control groups regardless of its modality. The results are discussed in terms of theories of habituation with special emphasis on the concept of priming utilized by Wagner (1976) and Öhman (1979). [ABSTRACT FROM AUTHOR] |
| Databáze: |
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