Haddad, N F <br/><br/>
Wheel-running in discrete trial and operant paradigms under various effort requirements.  [electronic resource] 

 -  Physiology & behavior  Sep 1994 
 - 487-93 p.  digital 
<br/><br/> Publication Type: Journal Article 
<br/><br/><label>ISSN: </label>0031-9384 
<br/><br/><label>Standard No.: </label>10.1016/0031-9384(94)90291-7  doi 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Animals<br/>Conditioning, Operant<br/>Extinction, Psychological<br/>Male<br/>Motor Activity<br/>Physical Exertion<br/>Rats<br/>Rats, Sprague-Dawley<br/>Reinforcement Schedule<br/>Running