Other |

UNIPOLAR ANODAL ELECTROLYTIC LESIONS IN THE BRAIN OF MAN AND CAT:  Report of Five Human Cases with Electrically Produced Bulbar or Mesencephalic Tractotomies

AMA Arch NeurPsych. 1953;70(2):224-234. doi:10.1001/archneurpsyc.1953.02320320090007.
Text Size: A A A
Published online

NEAR THE end of the last century, Golsinger (1895), cited by Roussy,1 presented the brains of six dogs with isolated lesions produced by unipolar electrolysis with a current of 20 to 40 ma. Sellier and Verger2 (1898) made their small lesions deep in the brains of three dogs with a bipolar electrode passing a current of 9 to 15 ma. for 7 to 10 minutes. Horsley and Clarke3 (1908) studied carefully some of the physical principles involved in such a use of electrodes and demonstrated that much less gas was evolved, and in a less explosive manner, at the anode than at the cathode; hence their anodal lesions were more constant in size than those produced at a cathode or with a bipolar electrode. After many observations, they ventured the statement that for a unit of time, "e. g., one minute, there will result about 1 mm.


Sign In to Access Full Content

Don't have Access?

Register and get free email Table of Contents alerts, saved searches, PowerPoint downloads, CME quizzes, and more

Subscribe for full-text access to content from 1998 forward and a host of useful features

Activate your current subscription (AMA members and current subscribers)

Purchase Online Access to this article for 24 hours





Meets CME requirements for:
Browse CME for all U.S. States
Accreditation Information
The American Medical Association is accredited by the Accreditation Council for Continuing Medical Education to provide continuing medical education for physicians. The AMA designates this journal-based CME activity for a maximum of 1 AMA PRA Category 1 CreditTM per course. Physicians should claim only the credit commensurate with the extent of their participation in the activity. Physicians who complete the CME course and score at least 80% correct on the quiz are eligible for AMA PRA Category 1 CreditTM.
Note: You must get at least of the answers correct to pass this quiz.
You have not filled in all the answers to complete this quiz
The following questions were not answered:
Sorry, you have unsuccessfully completed this CME quiz with a score of
The following questions were not answered correctly:
Commitment to Change (optional):
Indicate what change(s) you will implement in your practice, if any, based on this CME course.
Your quiz results:
The filled radio buttons indicate your responses. The preferred responses are highlighted
For CME Course: A Proposed Model for Initial Assessment and Management of Acute Heart Failure Syndromes
Indicate what changes(s) you will implement in your practice, if any, based on this CME course.
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).
Submit a Comment


Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

Related Content

Customize your page view by dragging & repositioning the boxes below.