10 research outputs found
Electrostimulation Contingencies and Attention, Electrocortical Activity and Neurofeedback
There is a growing body of evidence for diverse ways of modulating neuronal processing to improve cognitive performance. These include brain-based feedback, self-regulation techniques such as EEG-neurofeedback, and stimulation strategies, alone or in combination. The thesis goal was to determine whether a combined strategy would have advantages for normal cognitive function; specifically operant control of EEG activity in combination with transcutaneous electro-acustimulation.
In experiment one the association between transcutaneous electroacustimulation (EA) and improved perceptual sensitivity was demonstrated with a visual GO/NOGO attention task (Chen et al, 2011). Furthermore reduced commission errors were related to an electrocortical motor inhibition component during and after alternating high and low frequency EA, whereas habituation in the control group with sham stimulation was related to different independent components.
Experiment two applied frequency-domain ICA to detect changes in EEG power spectra from the eyes-closed to the eyes-open state (Chen et al, 2012). A multiple step approach was provided for analysing the spatiotemporal dynamics of default mode and resting state networks of cerebral EEG sources, preferable to conventional scalp EEG data analysis. Five regions were defined, compatible with fMRI studies.
In experiment three the EA approach of Exp I was combined with sensorimotor rhythm (SMR) neurofeedback. SMR training improved perceptual sensitivity, an effect not found in a noncontingent feedback group. However, non-significant benefits resulted from EA. With ICA spectral power analysis changes in frontal beta power were associated with contingent SMR training. Possible long-term effects on an attention network in the resting EEG were also found after SMR training, compared with mock SMR training.
In conclusion, this thesis has supplied novel evidence for significant cognitive and electrocortical effects of neurofeedback training and transcutaneous electro-acustimulation in healthy humans. Possible implications of these findings and suggestions for future research are considered
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Socialist Medicine and Maoist Humanitarianism: Chinese Medical Missions to Algeria, 1963-1984
As China was recovering from disease, starvation, and death that resulted from the authoritarian policies of the Great Leap Forward, Chinese officials looked outwards to “heal” Africa. From 1963, a steady trickle of Chinese doctors and nurses arrived in Algeria, providing health care for rural and suburban communities, before expanding their care throughout the continent of Africa. This dissertation explores the experiences of the medical mission workers in Algeria during the first two decades of China’s medical aid program. It documents the rise of a globalizing China in the post-colonial world through the highly significant, yet heretofore overlooked, medical and humanitarian networks between Chinese provincial health institutions and Algerian medical facilities. It shows that the exchange of medical technology, drugs, and practices between China and Algeria crossed not only physical borders, but also boundaries between different systems of medicine and visions of development.
Amidst the geopolitics of the Cold War, Chinese medical aid formed an alternative model of postcolonial international health care intervention in Third World countries. Central to this model was what I call “Chinese socialist medicine,” a body of hybrid medical knowledge and socialized health care delivery. Chinese socialist medicine not only challenged medical elitism by devising new, egalitarian approaches and ethical models, but also heavily relied on improvised medical technology and “scientized” acupuncture, which crossed epistemological boundaries between Western and Chinese medicines. Using a combination of Chinese, Arabic, and French textual and video sources, oral interviews, and clinical observations, this study analyzes the mobilization of human resources to Algeria, the application of mixed technologies of biomedicine and Chinese medicine, efforts to build medical supply infrastructure to manage local health problems, and China’s ambitions to transplant Chinese socialist healthcare ethics and ideals to Algerian communities. During this process, China’s socialist medicine emerged as a hybrid and flexible product of Maoist ideals for social welfare and internationalism. It constantly redrew its boundaries in Algeria by competing with medical missions from other socialist countries and recruiting local health actors to its enterprise.
The dissertation argues that China’s medical aid in the form of socialist medicine was a channel for the projection of China’s soft power in global health governance. It demonstrates that medicine and internationalism were integral to China’s political history in the Mao period. Mao’s China was hardly “xenophobic” or inwardly focused, but rather tangibly connected with the rest of the world by flows of people, ideas, materials, and technologies. Socialist China during this era was in fact committed to building its global presence through networks of soft power, including humanitarian aid and medicine. Resting at the intersection of Cold War politics, the history of medicine, and global humanitarianism, the dissertation shows that China’s medical missions served as an ideological and methodological alternative in postcolonial health management within the global South