Figure - PMC

Skip to main content

An official website of the United States government

Here's how you know

Here's how you know

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

View full-text article in PMC

. 2014 Jan 9;7:107. doi: 10.3389/fnint.2013.00107

Search in PMC
Search in PubMed
View in NLM Catalog
Add to search

Copyright © 2014 Lloyd, Medina, Hawk, Fosco and Richards.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

PMC Copyright notice

Within-session analysis of the effect of methamphetamine on concurrent schedule performance for water and sensory reinforcers. The left plot shows within-session changes in responding for a sensory reinforcer presented according to a VI 1 min schedule in rats treated with METH (0.5 mg/kg) and saline. Asterisks (*) in the left plot indicate differences in responding (p < 0.05) The middle plot shows within-session responding for a small (0.025 mL) water reinforcer concurrently presented with the visual stimulus shown in the left plot. The histogram plot on the right shows HRE for sensory and water reinforcers and the effects of saline and METH treatment on HRE. In the histogram, asterisks (*) indicate an overall difference in Habituation Rate between VS and water reinforcers (p < 0.05), and a difference in Habituation Rate between the saline and METH treated rats receiving the VS reinforcer (p <0.05).