Flavor preferences conditioned by intragastric polycose in rats: More concentrated polycose is not always more reinforcing

被引:51
作者
Lucas, F
Azzara, AV
Sclafani, A
机构
[1] CUNY BROOKLYN COLL,DEPT PSYCHOL,BROOKLYN,NY 11210
[2] CUNY,GRAD SCH,BROOKLYN,NY 11210
关键词
postingestive reinforcement; satiety; carbohydrates; caloric density;
D O I
10.1016/S0031-9384(97)00364-8
中图分类号
B84 [心理学];
学科分类号
04 ; 0402 ;
摘要
Prior studies have obtained conditioned preferences for flavors paired with intragastric (IG) infusions of Polycose (hydrolyzed starch) at concentrations of 1-32% over a different flavor paired with IG water. The present study determined if rats would also learn to prefer a flavor paired with concentrated Polycose infusion over a flavor paired with a more dilute Polycose infusion. In Experiment 1, adult female rats were food-deprived and trained during alternating one-bottle sessions (30 min/day) to associate one flavored solution (the CS+8) with IG infusions of 8% Polycose, a second flavored solution (the CS+16) with IG infusions of 16% Polycose, and a third flavored solution (the CS-) with IG water infusions. In subsequent choice tests, the rats displayed similar preferences for the CS+8 and CS+16 over the CS-, but preferred the CS+16 to CS+8 in a direct choice test. A similar preference pattern was obtained in 22 h/day tests with the rats nondeprived. In Experiment 2, new rats were similarly trained and tested but with CS+16 and CS+32 solutions paired with 16% and 32% Polycose infusions, respectively. The rats preferred both CS+ solutions over the CS- solution in the shea-and long-term tests. However, the CS+16 was preferred over the CS+32 by the food-deprived rats in the short-term tests. The two CS+ solutions were equally preferred in the long-term tests with food ad lib. These and other findings indicate that the postingestive reinforcing action of Polycose increases as concentration increases from 1% to 16% but does not increase further, and may actually decrease, at a 32% concentration. The rapid satiating effect of concentrated carbohydrate solutions may limit their reinforcing consequences. (C) 1998 Elsevier Science Inc.
引用
收藏
页码:7 / 14
页数:8
相关论文
共 37 条
[1]   FLAVOR PREFERENCES CONDITIONED BY INTRAGASTRIC INFUSIONS OF DILUTE POLYCOSE SOLUTIONS [J].
ACKROFF, K ;
SCLAFANI, A .
PHYSIOLOGY & BEHAVIOR, 1994, 55 (05) :957-962
[2]   FAT APPETITE IN RATS - THE RESPONSE OF INFANT AND ADULT-RATS TO NUTRITIVE AND NONNUTRITIVE OIL-EMULSIONS [J].
ACKROFF, K ;
VIGORITO, M ;
SCLAFANI, A .
APPETITE, 1990, 15 (03) :171-188
[3]  
ARBOUR KJ, 1988, J COMP PSYCHOL, V102, P177, DOI 10.1037/0735-7036.102.2.177
[4]   CONDITIONED TASTE PREFERENCES BASED ON CALORIC DENSITY [J].
BOLLES, RC ;
HAYWARD, L ;
CRANDALL, C .
JOURNAL OF EXPERIMENTAL PSYCHOLOGY-ANIMAL BEHAVIOR PROCESSES, 1981, 7 (01) :59-69
[5]   CONDITIONED SATIETY IN RAT [J].
BOOTH, DA .
JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY, 1972, 81 (03) :457-471
[6]   POSTINGESTIVE MODULATION OF SWEETNESS PREFERENCE GRADIENT IN RAT [J].
BOOTH, DA ;
LOVETT, D ;
MCSHERRY, GM .
JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY, 1972, 78 (03) :485-&
[7]   EFFECTS OF FOOD-DEPRIVATION ON LEARNING AND EXPRESSION OF FLAVOR PREFERENCES CONDITIONED BY SACCHARIN OR SUCROSE [J].
CAPALDI, ED ;
OWENS, J ;
PALMER, KA .
ANIMAL LEARNING & BEHAVIOR, 1994, 22 (02) :173-180
[8]   SOME DETERMINANTS OF INTAKE OF SUCROSE SOLUTIONS [J].
COLLIER, G ;
BOLLES, R .
JOURNAL OF COMPARATIVE AND PHYSIOLOGICAL PSYCHOLOGY, 1968, 65 (3P1) :379-&
[9]   EFFECTIVENESS OF SOME SUGARS IN STIMULATING LICKING BEHAVIOR IN RAT [J].
DAVIS, JD .
PHYSIOLOGY & BEHAVIOR, 1973, 11 (01) :39-45
[10]   LEARNING TO SHAM FEED - BEHAVIORAL-ADJUSTMENTS TO LOSS OF PHYSIOLOGICAL POSTINGESTIONAL STIMULI [J].
DAVIS, JD ;
SMITH, GP .
AMERICAN JOURNAL OF PHYSIOLOGY, 1990, 259 (06) :R1228-R1235