ISSN:
1469-8986
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Medicine
,
Psychology
Notes:
The response of hyperkinetic (HK) boys to light flashes of four different intensities were measured with averaged visual evoked potential (AVEP). Latency, amplitude and stability data, including the slope of the regression of these measures with flash intensity, were obtained in initial and replicate samples of HK and control subjects. Repeated tests were done in attending and inattending conditions in a drug-free condition, and 1 hr. 1 week, and 5 weeks after treatment with dextroamphetamine.The data failed to support the hypotheses that HK children show small response to weak stimuli and normal to increased response to strong stimuli or “hyperaugmentation.” that they show increased response to weak stimuli or “reduction” when they are treated with dextroamphetamine, and that behavioral responsiveness In this drug is related to the degree of augmentation. The data also failed to support the hypothesis that detection of AVEP abnormalities in HK subjects is enhanced by testing in an attending condition. However, a few replicated findings were obtained which suggest that some AVEP factors other than the augmentation reduction measure may be related to both the degree of initial hyperactivity and the degree of decrease of hyperactivity with dextroamphetamine.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1469-8986.1976.tb00854.x
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