ZIB

Hits per page

hits 1 - 2 | 2 hits

Sorting

Electronic Resource

Facilitation or impairment of learning by d-amphetamine as a function of stimuli (1971)

Glick, Stanley D.

Springer

Psychopharmacology 21 (1971), S. 353-360

add to mindlist on the mindlist

Details

ISSN: 1432-2072

Keywords: Amphetamine ; Learning ; Situational Determinants

Source: Springer Online Journal Archives 1860-2000

Topics: Medicine

Notes: Abstract Water-rewarded spatial discrimination learning was studied in rats injected with either d-amphetamine sulphate or physiological saline 15 min prior to the first of two training sessions. The effect of a light which functioned as a reward and/or as a distraction in the testing situation was examined. Amphetamine was found to facilitate learning by enhancing the reward value of light onset and also to impair learning by enhancing the distraction of light onset. The effects of amphetamine were found to interact with the duration of water deprivation preceding the first training session. Factors responsible for the controversy concerning amphetamine's influence on learning were implicated.

Type of Medium: Electronic Resource

URL: http://dx.doi.org/10.1007/BF02419057

Permalink

Library	Location	Call Number	Volume/Issue/Year	Availability

Others were also interested in ...

Paper (German National Licenses)

Fulltext

Electronic Resource

Effect of non-complementary nucleotides on the rate of helix formation: Kinetics of formation of poly (I)·poly (C,I) and poly (I)·poly (C,U) complexes (1972)

Kallenbach, Neville R. ; Drost, Stanley D.

New York : Wiley-Blackwell

Biopolymers 11 (1972), S. 1613-1620

add to mindlist on the mindlist

Details

ISSN: 0006-3525

Keywords: Chemistry ; Polymer and Materials Science

Source: Wiley InterScience Backfile Collection 1832-2000

Topics: Chemistry and Pharmacology

Notes: Apparent second-order rate constants for complex formation between poly (I) and poly (C) and copolymers of C containing non-complementary I or U residues have been determined spectrophotometrically. The rate constants decrease as the concentration of either I or U in the C strands increases-the effect seems insensitive to the species of residue involved, when differences in the thermal stabilities of the poly (I) poly (C,I) and poly (I). poly (C,U) complexes are taken into account. These results suggest that low concentrations of relatively stable defects can alter the apparent kinetic “complexity” of polynucleotides as determined by hybridization methods (C0t analysis).

Additional Material: 3 Ill.