November 24, 1981

PARKINSON'S By WALTER SULLIVAN SURGEONS in Stockholm plan soon to insert, in the brain of a patient suffering from Parkinson's disease, cells taken from that person's adrenal glands. Their hope is that this, the first known attempt to transplant tissue into a human brain, will counter the tremors and other symptoms of that disease. If successful, the method might be applicable to some other brain disorders, such as Huntington's chorea and damage due to strokes. Although the planned treatment for Parkinsonism is untested in humans, the procedure is the fruit of eight years of research and animal experiments by the Stockholm group and its collaborators at the National Institute of Mental Health in Washington, D.C., and at the University of Colorado Health Sciences Center in Denver. The Americans are not participating in the experiment on a human patient. The animal tests have shown the brain to be what the experimenters call a ''privileged site'' for transplants. This is because the brain typically does not reject transplants, unlike other parts of the body, where immune defenders destroy such intrusions.

The Secretary of the Navy said today that he had signed a statement supporting Richard V. Allen's contention that he had intended to surrender to the Government the $1,000 he received from a Japanese magazine. The Secretary, John F. Lehman Jr., said in a telephone interview that he was in Mr. Allen's office in the old Executive Office Building on either Jan. 21, the day Mr. Allen, the President's national security adviser, received the cash, or a day or two later. According to Mr. Lehman, a close friend of Mr. Allen, Mr. Allen expressed ''chagrin and amazement'' that the Japanese had handed him the cash. Conversation Recalled ''He said he had stuck it in a safe to turn it over to security,'' said Mr. Lehman, who took this to mean Government authorities. The Navy Secretary said he had provided a signed statement to Mr. Allen recalling their conversation of last January.

International A freeze on nuclear forces in Europe was suggested again by Leonid I. Brezhnev in a day of talks with Chancellor Helmut Schmidt in Bonn. The proposal has been rejected by NATO on the ground that it would freeze Soviet superiority in medium-range warheads. (Page A1, Column 3.) A mixed economy in China is in increasing prospect. Peking's two top policy-making bodies formally acknowledged a need for more private enterprise to alleviate chronic unemployment, and they proposed that new jobs be created increasingly by private businesses as well as by cooperative enterprises. (A1:1-2.)

When people think of computers, they often envision the latest in sophisticated technology. However, for many companies and government agencies that use computers, that is not always the case. Many computer users, in fact, are now saddled with outmoded computer programs that slow down the systems, constantly threaten to break down and are difficult and costly to maintain. Instead of working to expand the use of the computer to perform new corporate functions, many company data processing departments, which have neglected to replace computer programs as they aged, are now spending more than half their time and money merely trying to keep the existing programs running. ''It's like a road with potholes,'' said Thomas E. Bell, president of the Computer Technology Group, a consulting firm in Warren, N.J. ''It's easier to just put in patches. Eventually they become patches upon patches and the whole stability of the road is undermined.''

France, Britain, Italy and the Netherlands announced an agreement today to take part in a Sinai peacekeeping force after Israel completes its withdrawal next spring. The agreement was reached after weeks of negotiations that came close to breaking down at several points. The result was a complex series of statements worded so as to try to avoid condemnation by the Arab countries and an outright rejection from Israel. It was not clear whether the first objective would be met, and by this evening an Israeli statement had put the second in doubt.