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

. 2011 Jun 1;6(6):e20437. doi: 10.1371/journal.pone.0020437

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

Morita et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

PMC Copyright notice

A, Sandpaper discrimination. Left, learning curve for 3 example rats. Day is is start of stimulus-reward contingency (Stage 3). Middle, Number of daily training sessions to reach criterion performance, for each successful learner. Right, Fraction of successful learners. B, Smooth-grooved discrimination. Left, learning curve for 2 rats. Rats were initially trained in dim light, and then switched to darkness. Middle, number of training sessions to reach criterion performance. Right, Fraction of successful learners.