Online research in philosophy

This paper explores R. W. Sperry's view that consciousness is ?causally? effective in directing voluntary human behaviour. This view, formulated in the course of his split brain research, presupposes an earlier theory that motor behaviour is the sole output of the brain and that mental phenomena were developed for regulation of overt response. His view of the ?causal? effectiveness of consciousness is shown to be based on a theory of emergent properties like that of Bunge. It is also shown that Sperry, like Bunge, is a materialist; appearances to the contrary are due to occasional use of standard terms such as ?materialism? and ?interaction? in unusual senses. It is argued, with specific reference to Chisholm and Searle, that Sperry's hypothesis is helpful towards elucidating the structure and dynamics of action. It is also argued that it is not, as Sperry thinks, a consequence of his position that moral values are part of brain science.

The views of linguistic analysts and objectivists are explored with regard to the question of interactionism. It is argued that the admission of a logical difference between explanation by cause and explanation by motive cannot disqualify causal explanations of human action, cannot be construed as challenging the competence of science, and cannot count against interactionism. It is also argued that objectivist programs for eliminating mentalistic concepts either implicitly admit interactionism or cannot distinguish relevantly between interactionism and parallelism.

A dialog between Donald MacKay and Mario Bunge, printed in the journal Neuroscience over the course of two years beginning in 1977, provides a conscise summary of MacKay's views on the mind-body relationship. In this dialog, MacKay contrasts the dualistic interactionism theory of Popper and Eccles with Bunge's emergentist materialism theory, and then builds a case for a third alternative based on the notion of mental events embodied in, but not identical to, brain events. Although neuroscience has made tremendous progress in the past two decades, MacKay's attempt to trace a path between interactionism and materialism is still worth considering.