Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 85 for “"Prefrontal cortex (PFC)"”.
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A computational study of the origin of brain oscillations at multiple scales
… caused by chemogenetic chronic inhibition of the prefrontal cortex (PFC) are reflected by an increase of slow oscillatory power (<4 Hz) in the local field potential and an increase of coherence in those bands, suggesting that rs-fMRI connectivity primarily reflects low-frequency neural …
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Investigating Neuronal Cell Classes and their Role in Cognition
… area (LIP), the dorsolateral and ventrolateral prefrontal cortex (PFC) and the extrastriate visual area (V4). While the number of cell classes found across areas differed, there were several classes across areas that appeared to be correlates. Classes in each area also showed functional …
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Age Differences in Revision of Causal Belief
… working memory (WM). Research shows that the prefrontal cortex (PFC) is involved during WM tasks and that PFC functioning declines with age. The ability to comprehend and update text-based information requires an intact PFC and efficient WM and IR. The current study presented a series of …
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Localized or diffuse: a volumetric investigation of the relation between prefrontal cortical regions and the habitual engagement of cognitive reappraisal
… imaging research pointing to the role of the prefrontal cortex (PFC) in cognitive reappraisal, the structural correlates of habitual engagement of reappraisal are unclear. Functional brain imaging studies of reappraisal have shown broad engagement of bilateral middle frontal cortex (MFC) and …
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PERSISTENT ACTIVITY DURING WORKING MEMORY: MATURATION AND CORTICAL SPECIALIZATION
… critical cognitive functions and dorsolateral prefrontal cortex (dlPFC) has generally been recognized as the seat of working memory. Development of working memory ability through adolescence, accompanied by structural changes has been reported in human studies, however, how neurophysiological …
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PREFRONTAL CORTEX ACTIVITY DURING ATTENTIONAL BIAS CONDITIONING WITH FEARFUL FACES: A NEAR-INFRARED SPECTROSCOPY ANALYSIS
… task. In addition, hemodynamic responses in the prefrontal cortex (PFC) were measured using near-infrared spectroscopy (NIRS). It was hypothesized that after pairing a neutral stimulus (a colored square) with a fearful face, attentional bias toward the fearful face would transfer to the neutral …
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CELLULAR CODING PROPERTIES OF GOAL DIRECTED BEHAVIOR IN THE MEDIODORSAL AND INTRALAMINAR NUCLEUS OF THE RAT: COMPARISONS TO PREFRONTAL CORTEX
… (IL) nuclei of central thalamus interact with prefrontal cortex (PFC) through multiple pathways to control goal directed behavior. The initial purpose of this dissertation was to characterize cellular coding properties of these nuclei in central thalamus using electrophysiological measures in …
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THE RELATIONSHIP BETWEEN P300 EVOKED POTENTIALS AND PREFRONTAL CORTEX OXYGEN USE: A COMBINED EEG AND NIRS STUDY
… fMRI research has also indicated increased prefrontal cortex (PFC) activity during P300 generation. To examine the relationship between P3b amplitude and PFC activity participants performed an easy and difficult target detection task in both EEG and NIRS called the oddball. The EEG and …
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Substrates of social functioning in individuals with VCFS
… larger amygdala and insula volumes and smaller prefrontal cortex (PFC), orbitofrontal cortex (OFC), dorsolateral prefrontal cortex (DLPFC), insula, superior temorpal sulcus (STS), and anterior cingulate cortex (ACC) volumes relative to controls. In addition, scores on the Child Behavior …
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The Impact of Early Life Adversity on Mediodorsal Thalamic-Prefrontal Cortex Maturation
… of cognitive and affective behaviors is the prefrontal cortex (PFC) which receives inputs from various brain regions, including the mediodorsal thalamus (MD), and undergoes a protracted maturation. Thus, it’s conceivable that ELA exposure during a sensitive window of MD development may …
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The connectivity of the mammalian prefrontal cortex
The fine scale connections of prefrontal cortex (PFC) were investigated in the rat brain, in order to determine organizational properties of PFC pathways which were previously undefined. Neuroanatomical tract tracers (Fluro-Gold, Fluoro-Ruby, Fluoro-Emerald, Biotinylated dextran amines; Fluorescein …
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An Assessment of Frontal Lobe Activity and BDNF Levels Following Concussion in Collegiate Athletes: A Near-Infrared Spectroscopy Study
… spectroscopy (NIRS) was used to measure prefrontal cortex (PFC) activity during the dot-probe task of affective attentional bias. Brain-derived neurotrophic factor (BDNF) levels are related to frontal lobe activity, recovery from brain injury, attention, and affective processing. …
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Investigations of the cognitive and neural processes supporting memory for neutral and emotional words
… less detailed memories recruited right inferior prefrontal cortex (PFC) and left parahippocampal gyrus. The left inferior PFC and left anterior hippocampus were additionally recruited in condition (a) when vivid memories could be formed. Investigations of memories' vividness have typically …
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The role of reuniens and rhomboid thalamic nuclei in spatial memory
… brain that are important for this process are prefrontal cortex (PFC) and hippocampus. The hippocampus has strong connections to medial PFC, however there are no direct return projections from medial PFC to hippocampus. The reuniens (Re) and rhomboid (Rh) nuclei of ventral midline thalamus have …
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Exploring the neurobehavioural impacts of combined early life and adult stress on decision making under uncertainty
… alterations in mitochondrial signalling in the prefrontal cortex (PFC). Fourthly, early life separation stress did not produce volumetric changes in brain regions commonly associated with stress impacts, including the hippocampus (HPC), PFC, and amygdala (AMY). Overall, these findings suggest …
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The Effects of Concept Mapping on Design Neurocognition: An Empirical Study Measuring Changes in the Brain when Defining Design Problems
… changes in oxy-hemoglobin (oxy-Hb) in the prefrontal cortex (PFC) of students while they developed their design problem statements. A lower average oxy-Hb was observed in the group that was first asked to develop concept maps. The lower activation was observed in their left PFC. The group …
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Individual sensitivity to novelty and (+)-3,4-methylenedioxymethamphetamine: Roles for serotonin and GABA neurotransmission
… (5-HT2AR) in the nucleus accumbens (NAc) and prefrontal cortex (PFC). We then carried this finding into a model of individual difference in which animals are separated based on their differential locomotor response to a novel environment into high responder rats (HR) and low responder rats …
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The role of the prefrontal cortex in hypnotic and placebo analgesia.
… and that whilst placebo effects rely on the prefrontal cortex (PFC; Benedetti, 2010), the role of the PFC in hypnosis and hypnotic suggestibility is inconclusive. Methods: Fifty-four participants (27 male) performed tasks known to tap either left (the Stroop Task; Stroop, 1938), right (the …
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Using neural population decoding to understand high level visual processing
… information is coded in the inferior temporal cortex (ITC) and prefrontal cortex (PFC) by dynamic patterns of neural activity, and that when a monkey attends to an object in a cluttered display, the pattern of ITC activity returns to a state that is similar to when the attended object is …
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Spiking and oscillatory correlates of visual short-term memory for multiple items
… area (LIP), frontal eye field, and lateral prefrontal cortex (PFC). At stimulus encoding, lower frequency oscillations decreased in power in proportion to the total number of stimuli presented, while higher frequency oscillations increased in power in proportion to the number of stimuli …
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