“Whoa! It’s like Spotify but for academic articles.”

Instant Access to Thousands of Journals for just $40/month

The Effects of Strychnine and Caffeine Upon the Rate of Learning

Albino rats were trained in the circular maze after subcutaneous injection of strychnine sulphate and of caffeine. Others were trained after similar manipulations but without the drugs, as controls. Analysis of the data obtained gives the following results: 1. Small doses of strychnine sulphate are without effect upon the rate of habit-formation. 2. Large doses of strychnine sulphate, sufficient to produce tremor and incoordination of movement, accelerate learning. 3. Caffeine, in doses of 0.5 mgm. or more, retards learning in direct proportion to the size of the dose. 4. Strychnine sulphate in large doses increases the accuracy of performance of a perfected habit. 5. Large doses of caffeine result in increased activity and reduced accuracy of performance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Psychobiology PsycARTICLES®

The Effects of Strychnine and Caffeine Upon the Rate of Learning

Abstract

Albino rats were trained in the circular maze after subcutaneous injection of strychnine sulphate and of caffeine. Others were trained after similar manipulations but without the drugs, as controls. Analysis of the data obtained gives the following results: 1. Small doses of strychnine sulphate are without effect upon the rate of habit-formation. 2. Large doses of strychnine sulphate, sufficient to produce tremor and incoordination of movement, accelerate learning. 3. Caffeine, in doses of 0.5 mgm. or more, retards learning in direct proportion to the size of the dose. 4. Strychnine sulphate in large doses increases the accuracy of performance of a perfected habit. 5. Large doses of caffeine result in increased activity and reduced accuracy of performance.
Loading next page...
 
/lp/psycarticles-reg/the-effects-of-strychnine-and-caffeine-upon-the-rate-of-learning-Zw5dXinO00

Sorry, we don’t have permission to share this article on DeepDyve,
but here are related articles that you can start reading right now:

Explore the DeepDyve Library

How DeepDyve Works

Spend time researching, not time worrying you’re buying articles that might not be useful.

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from Springer, Elsevier, Nature, IEEE, Wiley-Blackwell and more.

All the latest content is available, no embargo periods.

See the journals in your area

Simple and Affordable Pricing

14-day free trial. Cancel anytime, with a 30-day money-back guarantee.

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches

$40/month

Best Deal — 25% off

Annual Plan

  • All the features of the Professional Plan, but for 25% off!
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

$30/month
billed annually