ISSN:
1432-2072
Keywords:
Color discrimination
;
Signal detection analysis
;
LSD
;
Amphetamine
;
Morphine
;
Haloperidol
;
Pigeon
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract Six pigeons were trained in a chamber with three response keys. Following an observing response on the center key, either colored or noncolored (white) lights were projected on that key. A second center key observing response provided an opportunity to respond on one of the side keys, appropriate to the stimuli presented, to obtain food; responding on the incorrect side produced a 30-s time-out. A delay period of varying duration with no stimuli followed stimulus presentation; the length of the delay was determined ‘on-line’, such that performance would be maintained at about 80% correct. Lysergic acid diethylamide (LSD, 0.04–0.2 mg/kg) had no significant effect on the accuracy of the discrimination (overall percent conrrect responses), even at doses that produced cessation of responding in some animals. Amphetamine (1–4 mg/kg) and morphine (0.5–4 mg/kg) decreased accuracy by decreasing sensitivity (A') and had little effect on reaction time. Haloperidol (0.5–2 mg/kg) had no significant effect on any measure of performance. None of the drugs altered response bias (B″).
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00427488
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