Global ETD Search
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Showing 1 to 20 of 40 for “"Settore M-PSI/02 - Psicobiologia e Psicologia Fisiologica"”.
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The neurophysiology of internally-driven actions
Acting in the world in a way that matches our goals, overriding impulses, is one of the first abilities that we must learn while growing up. We often change the course of our actions because of external influences or because we simply “change our mind”. As John H. Patterson said, “Only fools and …
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Neural mechanisms of attention to motion
Attention is thought to alter appearance by intensifying the sensory impression of the attended stimulus. Current debates are about how this increases might operate and what are the underlying neural mechanisms. Three mechanisms have been proposed to account the effect of attention: contrast gain, …
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Decoding Auditory Motion Direction And Location In hMT+/V5 And Planum Temporale Of Sighted And Blind Individuals
The research presented in this thesis addresses the neural mechanisms of auditory motion processing and the impact of early visual deprivation on motion-responsive brain regions, by using functional magnetic resonance imaging. Visual motion, and in particular direction selectivity, is one of the …
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Verbs and nouns in awake neurosurgery: needs and answers
Awake surgery is a surgical procedure applied to people with brain tumors. Patients are kept awake during surgery to perform language tasks during electrical stimulation of cortico-subcortical brain structures. When the application of electrical pulses to the brain repeatedly triggers errors, this …
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Not the Pearls but the Thread: Using fNIRS Hyperscanning to Investigate Real-Life Social Interactions
… or more individuals. Since its introduction in 2002, this approach has represented a major methodological advance in social neuroscience, enabling researchers to directly investigate the neural mechanisms underlying active social exchange. Around the early 2010s, the use of functional …
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The development of number processing and its relation to other parietal functions in early childhood
The project has explored the developmental trajectories of several cognitive functions related to different brain regions: parietal cortex (quantity manipulation, finger gnosis, visuo-spatial memory and grasping abilities) and occipito-temporal cortex (face and object processing), in order to …
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Object Individuation in Domestic Chicks (Gallus gallus)
Object individuation is the process by which organisms establish the number of distinct objects present in an event. The ability of individuating objects was investigated in two/three-day-old chicks (Gallus gallus). A first series of experiments (Exp. 1 - Exp. 6) assessed the role of the property …
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On the fate and consequences of conscious and non-conscious vision
… deficits ranging from blindness to achromatopsia (the impossibility of perceiving color), akinetopsia (the impossibility of perceiving motion) and/or visual agnosias (the difficulty in recognizing objects through vision). Also, extensive neuroimaging experiments have shown that visual …
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From perceptual to semantic representations in the human brain
Humans are capable of recognizing a myriad of objects in everyday life. To do that, they have evolved the ability to detect their commonalities and differences, moving from perceptual details to construct more abstract representations that we call concepts, which span entire categories (such as the …
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Enhancement of verb retrieval: Neuromodulation, repetition priming, and aphasia rehabilitation
There is a need to increase the efficacy and efficiency of aphasia rehabilitation protocols. In order to do this, we may rely on knowledge about how the language system may be changed by experience, including it’s plasticity to behavioral training and to neuromodulation. In this thesis, I study …
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Where symbols meet meanings: The organization of gestures and words in the middle temporal gyrus
Every day we use actions, gestures and words to interact with other people and with the environment. Being able to understand people’s movements and communicative intentions is critical to our ability to act successfully in the world. Here we present three studies aiming at investigating the …
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