| dc.contributor | Henao Gallo, Oscar Alberto | |
| dc.contributor | Escobar Zuluaga, Antonio Hernando | |
| dc.creator | Ospina Toro, Daniela | |
| dc.date | 2016-12-12T15:05:06Z | |
| dc.date | 2021-11-02T20:33:53Z | |
| dc.date | 2016-12-12T15:05:06Z | |
| dc.date | 2021-11-02T20:33:53Z | |
| dc.date | 2016 | |
| dc.identifier | T511.5 O83;6310000117375 F4689 | |
| dc.identifier | https://hdl.handle.net/11059/7139 | |
| dc.description | A fast and economic pilot study for measuring the neuroenergetic dynamics in an ADHD-diagnosed sample is performed. Based in a simplified connectome version, a graph theory application for neural connectivity, the performance and subjective states are linked through brain activity analysis during a behavioral attention test. ADHD is a neurobehavioral disorder related to a deficient filtering of stimuli, inefficacy performing in sustained activities and difficulties responding to unpredictable situations. There are two main strategies to evaluate this disorder: (1) behavioral tests and (2) neural biomarkers. Behavioral tests provide a criterion for classifying responses in a collection of tasks, looking for unstructured and inconsistent responses to given instructions or rules. Hyperactivity, inattention and impulsivity are some criteria analyzed. By the other hand, neural biomarkers are measurable indicators for particular states or diseases set up from EEG data. Since 2013, the theta/beta ratio was accepted as the ADHD biomarker, suggesting a misbalance of electrical brain activity. In this study, brain connectivity on sustained attention task performed by children between 7 to 13 years old from a public school. Ten participants were ADHD-diagnosed and five were selected for the control group to compare EEG signals collected with low-cost neuroheadset. Graphs show different connectivity dynamics in both groups for Theta (4-8 Hz), SMR (12-15 Hz) and Beta (15-20 Hz), indicating connectivity variations in brain regions according to the neuroenergetics theory. The connectivity in the ADHD group is reduced in lower frequencies first (Theta), then SMR and finally Beta. In contrast, the control graphs for Theta and SMR brainwaves are closer to the small-world networks and it can be noticed by comparing the measurements of the different graphs among themselves. The decay process corresponds to the bottom-up approach, where random stimuli trigger transitions from one state to the other, which is in this case the transition from attention to inattention. The declining of resources placed for disposal at the randomized SART stage might imply a limitation regulating the production of the required resources for the tasks fulfillment, as it has been reported in previous studies where other techniques are implemented. | |
| dc.format | application/pdf | |
| dc.format | application/pdf | |
| dc.language | spa | |
| dc.publisher | Pereira : Universidad Tecnológica de Pereira | |
| dc.publisher | Facultad de Ingenierías Eléctrica, Electrónica y Ciencias de la Computación | |
| dc.publisher | Maestría en Ingeniería Eléctrica | |
| dc.rights | Attribution-NonCommercial-Noderivatives 4.0 International | |
| dc.rights | EL AUTOR, manifiesta que la obra objeto de la presente autorización es original y la realizó sin violar o usurpar derechos de autor de terceros, por lo tanto la obra es de exclusiva autoría y tiene la titularidad sobre la misma. PARÁGRAFO: En caso de presentarse cualquier reclamación o acción por parte de un tercero en cuanto a los derechos de autor sobre la obra en cuestión, EL AUTOR, asumirá toda la responsabilidad, y saldrá en defensa de los derechos aquí autorizados; para todos los efectos la universidad actúa como un tercero de buena fe. EL AUTOR, autoriza a LA UNIVERSIDAD TECNOLOGICA de PEREIRA, para que en los términos establecidos en la Ley 23 de 1982, Ley 44 de 1993, decisión andina 351 de 1993, decreto 460 de 1995 y demás normas generales sobre la materia, utilice y use la obra objeto de la presente autorización. | |
| dc.rights | openAccess | |
| dc.rights | http://creativecommons.org/licenses/by-nc-nd/4.0/ | |
| dc.subject | Teoría de grafos | |
| dc.subject | Electroencefalografía - Aparatos e instrumentos | |
| dc.subject | Redes neurales (Computadores) | |
| dc.title | Análisis de conectividad funcional de la dinámica neuroenergética del TDAH = Functional Connectivity Analysis of Neuroenergetic Dynamics for ADHD | |
| dc.type | masterThesis | |
| dc.type | acceptedVersion | |
