A chamber for the instrumental control of licking behavior in the laboratory mouse

Identifying Trends in the Open-Access Behavior Analytic Literature via Computational Analyses (I): Simple Descriptions of Text

Published research in scientific journals are critical resources for researchers as primary sources about: what is important in the field, the direction the field is headed, how the field relates to other sciences, and as a historical record for each of these. In this exploratory study, we analyzed the articles of five behavior analytic journals to identify trends in these areas. To do this, we downloaded all available articles (N = 10,405) since the inception of five behavior analytic journals and one control journal. We then used computational techniques to turn the collection of raw text into a structured dataset for descriptive, exploratory analyses. We found consistent differences in the length and variability of published research across behavior analytic journals compared to a control journal. We also found increasing article lengths over time which, combined with the previous finding, may highlight changing editorial contingencies that influence the writing behavior of researchers. Further, we found evidence suggesting distinct (though still connected) verbal communities between the experimental analysis of behavior and applied behavior analysis. Lastly, keyword trends suggest that increased focus on "functional analyses," "problem behavior," and "autism spectrum disorder" currently dominates the research being published in these journals similar to the practitioner arm of behavior analysis. Researchers interested in studying published behavior analytic textual stimuli will find the corresponding open dataset useful. And, for those interested in computational analyses of these data, this first pass at simple descriptions provides a launching point for much fruitful future research.

Supplementary Information

The online version contains supplementary material available at 10.1007/s40616-022-00179-4.

IV nicotine self-administration in rats using a consummatory operant licking response: sensitivity to serotonergic, glutaminergic and histaminergic drugs

Tobacco smoking is characterized by repeated self-administration of nicotine by placing the cigarette in the mouth. The repeated hand-to-mouth self-administration is essentially a consummatory act. We recently developed a paradigm in which rats lick one of two spouts to trigger intravenous (IV) delivery of nicotine, which combines a consummatory act with rapid delivery of nicotine to model the act of tobacco smoking. We have found that rats will lick hundreds of times per nicotine infusion. In the current study, using the operant licking nicotine self-administration model with young adult Sprague-Dawley rats (0.03mg/kg/infusion of nicotine), we tested the effect of antagonists of H1 histamine receptors pyrilamine, serotonin (5HT) type 2 receptors ketanserin and N-methyl-d-aspartate (NMDA) glutamate receptors with d-cycloserine as well as an agonist of 5HT2c receptors lorcaserin, in dose ranges that we have found in previous studies to significantly reduce IV nicotine self-administration with the operant lever press operand. The H1 antagonist pyrilamine significantly reduced operant licking for nicotine self-administration. Pyrilamine caused significant reductions in the operant licking paradigm at lower doses (10 and 20mg/kg) than those we previously observed to affect responding in the operant lever press paradigm. In contrast, the 5HT2A and C antagonist ketanserin did not show an effect of reducing nicotine self-administration in the same dose range we had found in a previous study to significantly reduce operant lever press nicotine self-administration. The 5HT2C agonist lorcaserin significantly decreased nicotine self-administration in the licking paradigm at the same dose threshold as with lever press responding. The NMDA glutamate partial agonist d-cycloserine did not produce any change in nicotine self-administration with the licking operand, in contrast to its effect on the classic lever-pressing task. The rat model incorporating consummatory aspects of tobacco addiction can provide distinct and potentially more relevant information concerning possible new avenues of treatment to combat tobacco addiction.

IV nicotine self-administration in rats using the consummatory operant licking response

Nicotine self-administered by tobacco smoking or chewing is very addictive in humans. Rat models have been developed in which nicotine is self-administered IV by the rats pressing a lever. However the reinforcing value of nicotine is much less in these models than the addictiveness of human tobacco use would indicate. The IV nicotine self-administration operant lever press model does not fully capture important aspects of tobacco use in humans. Conditioned oral consumption actions of smoking or chewing tobacco may play important roles in tobacco addiction. Neural circuitry underlying essential food consummatory responses may facilitate consummatory aspects of tobacco intake. To capture this motor consummatory aspect of tobacco addiction in the rat model of nicotine self-administration, we have developed a method of using a licking response instead of a lever press to self-administer IV nicotine. Sprague-Dawley rats were trained to lick one of two waterspouts for IV nicotine (0.03mg/kg/infusion). With the licking response rats self-administered stable nicotine levels throughout 24 sessions (45min each) of testing. The number of total licks/session significantly increased in a linear fashion over that period. The number of licks/infusion was substantial, rising steadily with training to an average of over 100 licks/infusion. Including the consummatory motor act with nicotine self-administration could help better model the compulsive aspects of tobacco addiction in humans.