Statistical analysis of neural correlates in decision-making

dc.contributor
Universitat Pompeu Fabra. Departament de Tecnologies de la Informació i les Comunicacions
dc.contributor.author
Martínez-García, Marina
dc.date.accessioned
2014-10-13T11:24:36Z
dc.date.available
2015-04-12T05:45:12Z
dc.date.issued
2014-06-05
dc.identifier.uri
http://hdl.handle.net/10803/283111
dc.description.abstract
We investigated the neuronal processes which occur during a decision- making task based on a perceptual classi cation judgment. For this purpose we have analysed three di erent experimental paradigms (somatosensory, visual, and auditory) in two di erent species (monkey and rat), with the common goal of shedding light into the information carried by neurons. In particular, we focused on how the information content is preserved in the underlying neuronal activity over time. Furthermore we considered how the decision, the stimuli, and the con dence are encoded in memory and, when the experimental paradigm allowed it, how the attention modulates these features. Finally, we went one step further, and we investigated the interactions between brain areas that arise during the process of decision- making.
eng
dc.description.abstract
Durant aquesta tesi hem investigat els processos neuronals que es pro- dueixen durant tasques de presa de decisions, tasques basades en un ju- dici l ogic de classi caci o perceptual. Per a aquest prop osit hem analitzat tres paradigmes experimentals diferents (somatosensorial, visual i auditiu) en dues espcies diferents (micos i rates), amb l'objectiu d'il.lustrar com les neurones codi quen informaci on referents a les t asques. En particular, ens hem centrat en com certes informacions estan cod- i cades en l'activitat neuronal al llarg del temps. Concretament, com la informaci o sobre: la decisi o comportamental, els factors externs, i la con- ana en la resposta, b e codi cada en la mem oria. A m es a m es, quan el paradigma experimental ens ho va permetre, com l'atenci o modula aquests aspectes. Finalment, hem anat un pas m es enll a, i hem analitzat la comu- nicaci o entre les diferents arees corticals, mentre els subjectes resolien una tasca de presa de decisions.
cat
dc.format.extent
152 p.
dc.format.mimetype
application/pdf
dc.language.iso
eng
dc.publisher
Universitat Pompeu Fabra
dc.rights.license
L'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc/3.0/es/
dc.rights.uri
http://creativecommons.org/licenses/by-nc/3.0/es/
*
dc.source
TDX (Tesis Doctorals en Xarxa)
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Decision-making
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Attention
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Working memory
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Spontaneous
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Primary Secondary Somatosensory Cortex
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Primary Auditory Cortex
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Medial, Dorsal and Ventral Premotor Cortex
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Prefrontal Cortex
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Primary Motor Cortex
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Orbito-frontal Cortex
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Two-Alternative Forced-Choice task
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Inter Stimuli Intervals
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Peristimulus Histogram
dc.subject
Test bar's Relative Orientation
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Firing Modulation
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Linear Regression Model
dc.subject
Mutual Information
dc.subject
Directed Information
dc.subject
Fano Factor
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Hidden Markov Model
dc.subject
Bayesian Information Criterion
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Attractor Network
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Synaptic Facilitation Model
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Drift Di usion Models
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Presa de desició
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Memoria de treball
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Activitat espontànea
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Còrtex somatosensorial Primari i Secundari
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Còrtex auditiu primari
dc.subject
Còrtex Premotor: Medial, Dorsal i Ventral
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Còrtex Prefrontal
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Còrtex motor primari
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Còrtex Orbito-frontal
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Intervals entre estímuls
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Intervals entre Spikes
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Histograma
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Models de regressi o lineal
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Models de Markov ocults
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Criteri d'informació Bayesiana
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Atractors
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Models de facilitació sinàptica
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Models de difusió
dc.title
Statistical analysis of neural correlates in decision-making
dc.type
info:eu-repo/semantics/doctoralThesis
dc.type
info:eu-repo/semantics/publishedVersion
dc.subject.udc
62
cat
dc.contributor.authoremail
marina.martinez@upf.edu
dc.contributor.director
Deco, Gustavo
dc.embargo.terms
6 mesos
dc.rights.accessLevel
info:eu-repo/semantics/openAccess
dc.identifier.dl
B 23183-2014
dc.description.degree
Programa de doctorat en Tecnologies de la Informació i les Comunicacions


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