{"title":"Assessing retino-geniculo-cortical connectivities in Alzheimer's Disease with a neural mass model","authors":"B. Bhattacharya, D. Coyle, L. Maguire","doi":"10.1109/CCMB.2011.5952125","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952125","url":null,"abstract":"Longitudinal studies have shown that increase of mean frequency within the theta band may be considered as an early symptom of progression into Alzheimer's Disease (AD). Also, slowing of mean frequency within the alpha band has long since been known to be a def nitive marker in AD. This work is aimed at developing a better understanding of alterations in neuronal connectivity underlying Electroencephalogram (EEG) changes in AD. Specif cally, connectivity changes in the dorso-lateral geniculo-cortical pathway are studied using a neural mass computational model. Connectivity parameters in the model are informed by the most recent experimental data on mammalian Lateral Geniculate Nucleus (dorsal). A slowing of the mean power spectra of the model output is observed with increase in both excitatory and inhibitory parameters in the intra-thalamic and thalamocortical pathways and a decrease of sensory pathway synaptic connectivity. The biological plausibility of the results suggest potential of further model extension in AD research.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"219 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116864634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
R. Prueckl, Engelbert Grünbacher, R. Ortner, A. Taub, R. Hogri, A. Magal, Eyal Segalis, M. Zreik, N. Nossenson, Ivan Herreros-Alonso, Andrea Giovannucci, R. O. Almog, S. Bamford, Mira Marcus-Kalish, Y. Shacham, P. Verschure, H. Messer, M. Mintz, J. Scharinger, A. Silmon, C. Guger
{"title":"The application of a real-time rapid-prototyping environment for the behavioral rehabilitation of a lost brain function in rats","authors":"R. Prueckl, Engelbert Grünbacher, R. Ortner, A. Taub, R. Hogri, A. Magal, Eyal Segalis, M. Zreik, N. Nossenson, Ivan Herreros-Alonso, Andrea Giovannucci, R. O. Almog, S. Bamford, Mira Marcus-Kalish, Y. Shacham, P. Verschure, H. Messer, M. Mintz, J. Scharinger, A. Silmon, C. Guger","doi":"10.1109/CCMB.2011.5952121","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952121","url":null,"abstract":"In this paper we propose a Rapid Prototyping Environment (RPE) for real-time biosignal analysis including ECG, EEG, ECoG and EMG of humans and animals requiring a very precise time resolution. Based on the previous RPE which was mainly designed for developing Brain Computer Interfaces (BCI), the present solution offers tools for data preprocessing, analysis and visualization even in the case of high sampling rates and furthermore tools for precise cognitive stimulation. One application of the system, the analysis of multi-unit activity measured from the brain of a rat is presented to prove the efficiency of the proposed environment. The experimental setup was used to design and implement a biomimetic, biohybrid model for demonstrating the recovery of a learning function lost with age. Throughout the paper we discuss the components of the setup, the software structure and the online visualization. At the end we present results of a real-time experiment in which the model of the brain learned to react to the acquired signals.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114516783","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Qinru Qiu, Qing Wu, Daniel J. Burns, Michael J. Moore, R. Pino, Morgan Bishop, R. Linderman
{"title":"Confabulation based sentence completion for machine reading","authors":"Qinru Qiu, Qing Wu, Daniel J. Burns, Michael J. Moore, R. Pino, Morgan Bishop, R. Linderman","doi":"10.1109/CCMB.2011.5952109","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952109","url":null,"abstract":"Sentence completion and prediction refers to the capability of filling missing words in any incomplete sentences. It is one of the keys to reading comprehension, thus making sentence completion an indispensible component of machine reading. Cogent confabulation is a bio-inspired computational model that mimics the human information processing. The building of confabulation knowledge base uses an unsupervised machine learning algorithm that extracts the relations between objects at the symbolic level. In this work, we propose performance improved training and recall algorithms that apply the cogent confabulation model to solve the sentence completion problem. Our training algorithm adopts a two-level hash table, which significantly improves the training speed, so that a large knowledge base can be built at relatively low computation cost. The proposed recall function fills missing words based on the sentence context. Experimental results show that our software can complete trained sentences with 100% accuracy. It also gives semantically correct answers to more than two thirds of the testing sentences that have not been trained before.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"110 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124689834","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
S. Bhattacharyya, A. Khasnobish, A. Konar, D. Tibarewala, A. Nagar
{"title":"Performance analysis of left/right hand movement classification from EEG signal by intelligent algorithms","authors":"S. Bhattacharyya, A. Khasnobish, A. Konar, D. Tibarewala, A. Nagar","doi":"10.1109/CCMB.2011.5952111","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952111","url":null,"abstract":"Brain Computer interfaces (BCI) has immense potentials to improve human lifestyle including that of the disabled. BCI has possible applications in the next generation human-computer, human-robot and prosthetic/assistive devices for rehabilitation. The dataset used for this study has been obtained from the BCI competition-II 2003 databank provided by the University of Technology, Graz. After pre-processing of the signals from their electrodes (C3 & C4), the wavelet coefficients, Power Spectral Density of the alpha and the central beta band and the average power of the respective bands have been employed as features for classification. This paper presents a comparative study of different classification methods including linear discriminant analysis (LDA), Quadratic discriminant analysis (QDA), k-nearest neighbor (KNN) algorithm, linear support vector machine (SVM), radial basis function (RBF) SVM and naive Bayesian classifiers algorithms in differentiating the raw EEG data obtained, into their associative left/right hand movements. Performance of left/right hand classification is studied using both original features and reduced features. The feature reduction here has been performed using Principal component Analysis (PCA). It is as observed that RBF kernelised SVM classifier indicates the highest performance accuracy of 82.14% with both original and reduced feature set. However, experimental results further envisage that all the other classification techniques provide better classification accuracy for reduced data set in comparison to the original data. It is also noted that the KNN classifier improves the classification accuracy by 5% when reduced features are used instead of the original.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"47 27","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131722314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Mirror neurons, language, and embodied cognition","authors":"L. Perlovsky","doi":"10.1109/CCMB.2011.5952129","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952129","url":null,"abstract":"Basic mechanisms of the mind, cognition, language, its semantic and emotional mechanisms are modeled using dynamic logic (DL). This cognitively and mathematically motivated model leads to a dual-model hypothesis of language and cognition. This models joint emergence of language and cognition from mirror neuron system.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133445069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Event-related (de-)synchronisation in arm isometric exertions: A wavelet analysis","authors":"B. Nasseroleslami, H. Lakany, B. Conway","doi":"10.1109/CCMB.2011.5952112","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952112","url":null,"abstract":"Neural activity associated with human voluntary motor control has been investigated using various large scale recording and imaging techniques such as Magnetoencephalog-raphy (MEG), electroencephalographic (EEG), and Electrocor-ticography (ECoG). While the EEG activity patterns associated with movement and especially movement execution are relatively known, there are only few studies that address the characteristics of motor rhythms in isometric exertions, and especially in the planning stage. In this paper we report on the results of an experiment where we have recorded EEG from 8 subjects during preparation, planning, and execution of directional arm isometric exertions in horizontal plane, according to instruction-delay visual cues. Continuous Morlet Wavelet Scalograms of the EEG signals in Cz C3 C4 electrodes associated with the task, show (de-)synchronisation patterns in planning and execution of the exertions. Phasic synchronisation in 2–7 Hz frequency band and both phasic and tonic desynchronisation in α (μ), β, and γ frequency bands are observed. Minor differences between contralateral, central and ipsilateral rhythmic motor activities during force generation are indicated and discussed. The results can be used to study the involvement of different brain regions during voluntary isometric tasks. The results pave the way for further clinical studies and also for Brain-Computer Interfacing (BCI) and BCI-rehabilitation research.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"57 73 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117109195","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Modeling decisions by brains that think, feel, and vegetate","authors":"D. Levine","doi":"10.1109/CCMB.2011.5952118","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952118","url":null,"abstract":"This paper summarizes three interrelated neural network models of data on emotionally influenced decision making: the first on a gambling task, the second on probability judgment, and the third on probability weighting. The networks incorporate data on executive regions of the brain and organizing principles such as adaptive resonance and fuzzy traces that have been utilized to model other cognitive data.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"48 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129909384","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Koosha Sadeghi Oskooyee, Mohammad Mansour Riahi Kashani, A. Harounabadi
{"title":"Implementing a cognition cycle with words computation","authors":"Koosha Sadeghi Oskooyee, Mohammad Mansour Riahi Kashani, A. Harounabadi","doi":"10.1109/CCMB.2011.5952124","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952124","url":null,"abstract":"Implementing a cognition cycle provides a real impression of the mechanisms of a natural intelligence system for explaining interdependent information processing activities among cognitive processes of the brain. The nature of information processing in the human brain is fuzzy. In this article, the Motivation/Attitude Driven Behavior (MADB) model as a kind of a cognition cycle is developed according to the fuzzy sets theory, a psychological model for managing new information is proposed, and applications of the behavioral models in computer engineering and especially computational intelligence are introduced and discussed. Subsequently, the transmissions of information in the MADB model are simulated toward implementing an intelligent humanoid behavior mechanism, and, finally, the results of the simulation are analyzed.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128951643","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Comparative study of band-power extraction techniques for Motor Imagery classification","authors":"N. Brodu, F. Lotte, A. Lécuyer","doi":"10.1109/CCMB.2011.5952105","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952105","url":null,"abstract":"We review different techniques for extracting the power information contained in frequency bands in the context of electroencephalography (EEG) based Brain-Computer Interfaces (BCI). In this domain it is common to apply only one algorithm for extracting the power information. However previous work and our current study confirm that one may indeed expect varying degrees of success by choosing inadequate algorithms for the power extraction. Our results suggest that on average one algorithm seems superior for extracting the power information for Motor Imagery tasks : the application of a Morlet wavelet on the raw EEG signals, with the time-frequency resolution tradeoff selected by cross-validation.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117279357","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Deciding in uncertainy: The creativity effects","authors":"John G. Taylor","doi":"10.1109/CCMB.2011.5952117","DOIUrl":"https://doi.org/10.1109/CCMB.2011.5952117","url":null,"abstract":"As part of the analysis of decision making with and without attention, we introduce the notion of the ‘Creativity Effects’, and indicate how they may be used in certain paradigms to explain how apparently attention-free decisions arise through a process in which attention and the resulting consciousness of a target stimulus play a crucial role.","PeriodicalId":315883,"journal":{"name":"2011 IEEE Symposium on Computational Intelligence, Cognitive Algorithms, Mind, and Brain (CCMB)","volume":"275 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124439400","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}