Appraisal of certain methodologies in cognitive science based on Lakatos’s methodology of scientific research programmes

Attempts to apply the mathematical tools of dynamical systems theory to cognition in a systematic way has been well under way since the early 90s and has been recognised as a “third contender” to computationalist and connectionist approaches (Eliasmith in Philos Psychol 9(4):441–463, 1996). Nevertheless, it was also realised that such an application will not lead to a solid paradigm as straightforwardly as was initially hoped (Eliasmith 1996; van Leeuwen in Minds Mach 15:271–333, 2005). In this paper I explicate a method for assessing such proposals by drawing upon Lakatos’s (in: Lakatos, Musgrave (eds) Criticism and the growth of knowledge, Cambridge University Press, London, pp 91–195, 1970) methodology of scientific research programs (hereafter: “MSRP”). MSRP focuses on the heuristics of a particular field and gauges the model/theory building stratagems by reference to theoretical and empirical progress, on the one hand, and the continuity and the autonomy of the way the field’s heuristic generates its series of models/theories, on the other. The requirement of continuity and autonomy afford distinct senses of ad hoc-ness, which serve as an effective tool to detect various subtleties which may otherwise be missed: the present approach identifies shortcomings missed by Chemero’s (Radical embodied cognitive science, The MIT Press, Cambridge, 2009) radical embodied cognitive science and falsifies Chemero’s claim that the methodological powers of his model-based account is on a par with computationalism. In general, I claim that MSRP is relevant to current methodological issues in cognitive science and can supplement debates regarding “local” assessments of methodologies, such as that between mechanical versus covering-law explanations. MSRP must at least be viewed as a necessary constraint for any methodological considerations in cognitive science.

     

Advanced microscopic imaging methods to investigate cortical development and the etiology of mental retardation

Studies on human patients and animal models of disease have shown that disruptions in prenatal and early postnatal brain development are a root cause of mental retardation. Since proper brain development is achieved by a strict spatiotemporal control of neurogenesis, cell migration, and patterning of synapses, abnormalities in one or more of these events during prenatal development can lead to cognitive dysfunction after birth. Many of underlying causes of mental retardation must therefore be studied in developing brains. To aid in this research, live imaging using laser scanning microscopy (LSM) has recently allowed neuroscientists to delve deeply into the complex three-dimensional environment of the living brain to record dynamic cellular events over time. This review will highlight recent examples of how LSM is being applied to elucidate both normal and abnormal cortical development.     

The Moral Relevance of Cost

Consequentialists do not deny that cost to the agent is a morallyrelevant consideration. For, they do include cost to the agent inthe calculation of the overall good. What they deny, however, isthat cost to the agent is a morally relevant factor independentlyof its impact on the overall good. I argue in this paper that, ifone rejects the claim that cost to the agent is a morallyrelevant factor on its own right, one is then committed toaccepting some `hyper' counter-intuitive moral claims. I callthese claims hyper counter-intuitive because they are at a moreextreme level of counter-intuitiveness than the ones usuallyassociated with consequentialism.     

Effect of Force Sense to Active Joint Position Sense and Relationships between Active Joint Position Sense,Force Sense,Jumping and Muscle Strength

Abstract

We aimed to investigate the effect of external load on the joint position sense (JPS) accuracy and its relation to the target jump height. The present study also aimed to explore the relationship between force sense (FS) and maximum voluntary isometric contraction (MVIC). Participants’ MVIC levels were determined during the 45-degree knee extension task. Then, participants were asked to execute a knee JPS task with external load (EL-JPS) and with no-load (EL-JPS). To assess jumping accuracy participants were instructed to jump with their 50% of maximum jump height. Results indicated that EL-JPS error values were lower than NL-JPS. EL-JPS was correlated to jumping errors. However, the relationship between NL-JPS and jumping errors was not significant. A significant correlation was found between MVIC and FS errors.