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Symposium D: A guide to journal publishing Symposium Chair: Shamus O'Reilly (United Kingdom)
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Symposia Abstracts / International Journal of Psychophysiology 85 (2012) 291–360
Ovulation related changes in EEG alpha and cognitive performance efficiency in healthy women K.B. Muravleva, S.V. Petrova, O.M. Bazanova State research Institute of Molecular Biology and Biophysics, Siberian Branch, Russian Academy of Medical Science, Novosibirsk, Russian Federation The objective of this investigation was to determine whether menstrual cycle and variations of EEG alpha activity are associated with cognitive performance and psycho-emotional tension. Results: the cognitive performance score, psycho-emotional tension and alpha-activity indices showed cyclic changes in both female HAF (high alpha frequency N 10 Hz) and LAF (low alpha frequencyb 10 Hz) groups: but they appeared in different ways: the cognitive performance efficiency, upper alpha band boundary frequency and alpha band width and IAPF increased significantly in LAF group on luteal phase, but no changed - in HAF group. Conclusions: These results demonstrated that brain alpha activity is associated with cognitive performance skills' change in parallel with changed hormone levels. The pattern alpha activity fluctuations during menstrual cycle are dependent on alpha frequency. The common underlying mechanism of these differences may be alpha frequency depended activation of central nervous system by monoaminergic pathways which are involved in steroid feedback and associated with behavioural style pattern. doi:10.1016/j.ijpsycho.2012.06.159
Scalp EEG markers in subjects with cognitive impairment and Alzheimer's disease D.V. Moretti Istituto di ricovero e cura a carattere scientifico S. Giovanni di Dio Fatebenefratelli, Brescia, Italy Dementia is a syndromic diagnosis, encompassing various stages of severity and different anatomo-physiological substrates. The hippocampus is one of the first and most affected brain regions affected by both Alzheimer's disease (AD) and mild cognitive impairment (MCI). Moreover, chronic cerebral–vascular disease (CVD) is one of the major risk factors for developing dementia. Recent studies have demonstrated different relationship between the anatomical substrate and scalp electroencephalography (EEG) markers. Indeed, modifications of EEG rhythm are not proportional to the hippocampal atrophy, whereas changes in EEG activities are directly proportional to the load of subcortical CVD. The computation of the EEG spectral power and the analysis of the functional coupling of brain areas, through linear coherence, are two of the most known processing methods in EEG research. Two specific EEG markers, theta/gamma and alpha3/alpha2 frequency ratio have been reliably associated to the atrophy of amygdalo–hippocampal complex. Moreover, theta/gamma ratio has been related to MCI conversion in dementia and alpha3/alpha2 ratio has been specifically related to MCI conversion in AD. The functional coupling of brain areas is also modulated by hippocampal atrophy. In the MCI subjects, hippocampal atrophy is linked to an increase of interhemispheric coherence seen on frontal and temporal regions whereas subcortical CVD is linked to a decrease of coherence in frontoparietal regions. In the present study the most significant results of recent studies on correlation between scalp EEG, cognitive decline, and anatomical substrate have been reviewed, with particular attention to the relationships between EEG changes and hippocampal atrophy. The following review is not intended to provide a comprehensive summary of the literature. Rather it identifies and discusses selected studies that are designed to find the specific correlation between scalp EEG markers
and anatomo-pathological substrate. The principal aim is to propose a plausible neurophysiological theoretical model of the cognitive decline as mirrored by both structural and functional tools of research. doi:10.1016/j.ijpsycho.2012.06.160
Sport addiction EEG indices: Perspectives for neurofeedback treatment S.G. Krivoschekov, O.N. Lushnikov State research Institute of Physiology, Siberian Branch, Russian Academy of Medical Science, Novosibirsk, Russian Federation Elite sport and extreme sports are potentially addictive. Exercise addiction is a low-adaptive multivariate pattern of training, leading to clinically significant impairment or disorder which manifests itself in the form of three or more specific features (D. Veale, 1995). Exercise addiction is mostly characterized with the following “withdrawal symptoms”: sense of guilt, depression, irritability, worry, tension, stress, anxiety, and ideational immobility (А. Szabo et al., 1998). There are three hypotheses of exercise addiction : thermogenic, catecholamine, and endorphin. However, there are very few convincing psychophysiological studies that could indicate the precise mechanism of the explanation of exercise addiction beginning and time course. The development of modern approaches to the visualization of brain activity (EEG) and displaying of the basic physiological signals (EMG, temperature, ECG, GSR, respiration) allow studying the physiological parameters of subjects with exercise addiction and objectifies the picture of the “withdrawal syndrome”. Investigation of the hormonal background as an indicator of stressful situation is also of great interest. We have identified specific physiological characteristics of sports addicts during the period of deprivation of physical activity and outside of it, with the following conclusions. Participants (12 sportsmen; age 20–25; all participants completed the EIA – Exercise Addiction Inventory, authors: Griffiths M.D., Szabo A., Terry A., 2005). The EEGs and EMGs were analyzed during the period of active physical load and during the period of its deprivation. In the period of physical activity deprivation the EEG was characterized by low bioelectrical activity in alpha-and theta-bands with strong background activity in the high beta range. Also, an increase in heart rate (HR) and EMG were observed. These results demonstrated that deprivation of physical activity was a determining factor for the early negative changes in people with addiction to physical exercise, both in physiological and psychological aspects. doi:10.1016/j.ijpsycho.2012.06.161
Symposium D: A guide to journal publishing Symposium Chair: Shamus O'Reilly (United Kingdom) Journals form a core part of the process of scholarly communication which are an integral part of scientific research itself. Journals exist to disseminate new research findings of the latest new thinking to scholarly professional communities worldwide. This symposium will present an insight into journal publishing from the publisher whose portfolio includes International Journal of Psychophysiology, Journal Biological Psychology, Journal of Neuroscience Methods, and Journal Neuroscience & Biobehavioral Reviews.
doi:10.1016/j.ijpsycho.2012.06.162
Symposia Abstracts / International Journal of Psychophysiology 85 (2012) 291–360
Ovulation related changes in EEG alpha and cognitive performance efficiency in healthy women K.B. Muravleva, S.V. Petrova, O.M. Bazanova State research Institute of Molecular Biology and Biophysics, Siberian Branch, Russian Academy of Medical Science, Novosibirsk, Russian Federation The objective of this investigation was to determine whether menstrual cycle and variations of EEG alpha activity are associated with cognitive performance and psycho-emotional tension. Results: the cognitive performance score, psycho-emotional tension and alpha-activity indices showed cyclic changes in both female HAF (high alpha frequency N 10 Hz) and LAF (low alpha frequencyb 10 Hz) groups: but they appeared in different ways: the cognitive performance efficiency, upper alpha band boundary frequency and alpha band width and IAPF increased significantly in LAF group on luteal phase, but no changed - in HAF group. Conclusions: These results demonstrated that brain alpha activity is associated with cognitive performance skills' change in parallel with changed hormone levels. The pattern alpha activity fluctuations during menstrual cycle are dependent on alpha frequency. The common underlying mechanism of these differences may be alpha frequency depended activation of central nervous system by monoaminergic pathways which are involved in steroid feedback and associated with behavioural style pattern. doi:10.1016/j.ijpsycho.2012.06.159
Scalp EEG markers in subjects with cognitive impairment and Alzheimer's disease D.V. Moretti Istituto di ricovero e cura a carattere scientifico S. Giovanni di Dio Fatebenefratelli, Brescia, Italy Dementia is a syndromic diagnosis, encompassing various stages of severity and different anatomo-physiological substrates. The hippocampus is one of the first and most affected brain regions affected by both Alzheimer's disease (AD) and mild cognitive impairment (MCI). Moreover, chronic cerebral–vascular disease (CVD) is one of the major risk factors for developing dementia. Recent studies have demonstrated different relationship between the anatomical substrate and scalp electroencephalography (EEG) markers. Indeed, modifications of EEG rhythm are not proportional to the hippocampal atrophy, whereas changes in EEG activities are directly proportional to the load of subcortical CVD. The computation of the EEG spectral power and the analysis of the functional coupling of brain areas, through linear coherence, are two of the most known processing methods in EEG research. Two specific EEG markers, theta/gamma and alpha3/alpha2 frequency ratio have been reliably associated to the atrophy of amygdalo–hippocampal complex. Moreover, theta/gamma ratio has been related to MCI conversion in dementia and alpha3/alpha2 ratio has been specifically related to MCI conversion in AD. The functional coupling of brain areas is also modulated by hippocampal atrophy. In the MCI subjects, hippocampal atrophy is linked to an increase of interhemispheric coherence seen on frontal and temporal regions whereas subcortical CVD is linked to a decrease of coherence in frontoparietal regions. In the present study the most significant results of recent studies on correlation between scalp EEG, cognitive decline, and anatomical substrate have been reviewed, with particular attention to the relationships between EEG changes and hippocampal atrophy. The following review is not intended to provide a comprehensive summary of the literature. Rather it identifies and discusses selected studies that are designed to find the specific correlation between scalp EEG markers
and anatomo-pathological substrate. The principal aim is to propose a plausible neurophysiological theoretical model of the cognitive decline as mirrored by both structural and functional tools of research. doi:10.1016/j.ijpsycho.2012.06.160
Sport addiction EEG indices: Perspectives for neurofeedback treatment S.G. Krivoschekov, O.N. Lushnikov State research Institute of Physiology, Siberian Branch, Russian Academy of Medical Science, Novosibirsk, Russian Federation Elite sport and extreme sports are potentially addictive. Exercise addiction is a low-adaptive multivariate pattern of training, leading to clinically significant impairment or disorder which manifests itself in the form of three or more specific features (D. Veale, 1995). Exercise addiction is mostly characterized with the following “withdrawal symptoms”: sense of guilt, depression, irritability, worry, tension, stress, anxiety, and ideational immobility (А. Szabo et al., 1998). There are three hypotheses of exercise addiction : thermogenic, catecholamine, and endorphin. However, there are very few convincing psychophysiological studies that could indicate the precise mechanism of the explanation of exercise addiction beginning and time course. The development of modern approaches to the visualization of brain activity (EEG) and displaying of the basic physiological signals (EMG, temperature, ECG, GSR, respiration) allow studying the physiological parameters of subjects with exercise addiction and objectifies the picture of the “withdrawal syndrome”. Investigation of the hormonal background as an indicator of stressful situation is also of great interest. We have identified specific physiological characteristics of sports addicts during the period of deprivation of physical activity and outside of it, with the following conclusions. Participants (12 sportsmen; age 20–25; all participants completed the EIA – Exercise Addiction Inventory, authors: Griffiths M.D., Szabo A., Terry A., 2005). The EEGs and EMGs were analyzed during the period of active physical load and during the period of its deprivation. In the period of physical activity deprivation the EEG was characterized by low bioelectrical activity in alpha-and theta-bands with strong background activity in the high beta range. Also, an increase in heart rate (HR) and EMG were observed. These results demonstrated that deprivation of physical activity was a determining factor for the early negative changes in people with addiction to physical exercise, both in physiological and psychological aspects. doi:10.1016/j.ijpsycho.2012.06.161
Symposium D: A guide to journal publishing Symposium Chair: Shamus O'Reilly (United Kingdom) Journals form a core part of the process of scholarly communication which are an integral part of scientific research itself. Journals exist to disseminate new research findings of the latest new thinking to scholarly professional communities worldwide. This symposium will present an insight into journal publishing from the publisher whose portfolio includes International Journal of Psychophysiology, Journal Biological Psychology, Journal of Neuroscience Methods, and Journal Neuroscience & Biobehavioral Reviews.
doi:10.1016/j.ijpsycho.2012.06.162