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They suggested that this could have been due to the fact that his eyes had not been used for a long time , or to their not having had enough time to recover from the operation . For the reasons given earlier , we will review here only those cases in which the raphe nuclei have been lesioned with a specific serotonergic neurotoxin , or where a drug has been injected directly into a nucleus . In addition , EvalIris has the added advantage that it can be invoked by any application connected to Internet , independently of the programming language and the platform , due to the fact that it has been implemented as a Web Service . The SETI@Home screensaver runs when the keyboard or mouse have not been used for a while . The bronze soldiers were to have been backed by a polished granite wall etched with photographs of service personnel . As with dorsal raphe lesions , we will review here only those ( unfortunately very few ) cases where the median raphe has been lesioned with a specific serotonergic neurotoxin , or where a drug has been injected directly into the median raphe . These techniques have been used for a number of producer durables , automobiles and some appliances , as well as house rents , for which some detail is given below . In contrast , the content of a portfolio submitted for promotion and tenure review would be more comprehensive , including representative course materials , a description of changes in content and methods that have been made over a period of time , illustrations of student learning , and supporting documentation .