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Institution

University of Palermo

EducationPalermo, Italy
About: University of Palermo is a education organization based out in Palermo, Italy. It is known for research contribution in the topics: Population & Cancer. The organization has 15621 authors who have published 40250 publications receiving 964384 citations. The organization is also known as: Università degli Studi di Palermo & Universita degli Studi di Palermo.


Papers
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Journal ArticleDOI
01 Jul 2012-Brain
TL;DR: The results show that all eight fluency tasks are sensitive to frontal lobe damage although only the phonemic word and designfluency tasks were specific to the frontal region, supporting the notion that frontal functions comprise a set of specialized cognitive processes, supported by distinct frontal regions.
Abstract: Fluency tasks have been widely used to tap the voluntary generation of responses. The anatomical correlates of fluency tasks and their sensitivity and specificity have been hotly debated. However, investigation of the cognitive processes involved in voluntary generation of responses and whether generation is supported by a common, general process (e.g. fluid intelligence) or specific cognitive processes underpinned by particular frontal regions has rarely been addressed. This study investigates a range of verbal and non-verbal fluency tasks in patients with unselected focal frontal ( n = 47) and posterior ( n = 20) lesions. Patients and controls ( n = 35) matched for education, age and sex were administered fluency tasks including word (phonemic/semantic), design, gesture and ideational fluency as well as background cognitive tests. Lesions were analysed by standard anterior/posterior and left/right frontal subdivisions as well as a finer-grained frontal localization method. Thus, patients with right and left lateral lesions were compared to patients with superior medial lesions. The results show that all eight fluency tasks are sensitive to frontal lobe damage although only the phonemic word and design fluency tasks were specific to the frontal region. Superior medial patients were the only group to be impaired on all eight fluency tasks, relative to controls, consistent with an energization deficit. The most marked fluency deficits for lateral patients were along material specific lines (i.e. left—phonemic and right—design). Phonemic word fluency that requires greater selection was most severely impaired following left inferior frontal damage. Overall, our results support the notion that frontal functions comprise a set of specialized cognitive processes, supported by distinct frontal regions. * Abbreviations : LIFG : left inferior frontal gyrus APM : advanced progressive matrices

226 citations

Journal ArticleDOI
TL;DR: In this article, a symmetry axiom is introduced, which states that a subject can be aware of something if and only if he is aware of its negation not-phi.
Abstract: This is the first of two papers where we present a formal model of unawareness. We contrast unawareness with certainty and uncertainty. A subject is certain of something when he knows that thing; he is uncertain when he does not know it, but he knows he does not: he is consciously uncertain. On the other hand, he is unaware of something when he does not know it, and he does not know he does not know, and so on ad infinitum: he does not perceive, does not have in mind, the object of knowledge. The opposite of unawareness is awareness, which includes certainty and uncertainty. This paper has three main purposes. First, we formalize the concept of awareness, and introduce a symmetry axiom which states that a subject can be aware of something, phi say, if and only if he is aware of its negation not-phi; in other words, that phi and not-phi are perceived together, or neither is. We then derive the basic properties of awareness. The second purpose is to prove a different axiomatic characterization, based on the concept of awareness of the system which underlies the model of information with partitional structures (known as S5). The third purpose of this paper is to show that without a substantial weakening of the rules of inferences normally assumed in modal logic a satisfactory model of unawareness, which includes the symmetry axiom, is impossible. This alternative approach is developed in a second paper by the same authors.

226 citations

Journal ArticleDOI
TL;DR: The results suggest that codon 12 K-ras mutations may have a role in the mucinous differentiation pathway, while codon 13 mutations have biological relevance in terms of colorectal cancer clinical outcome.

226 citations

Journal ArticleDOI
TL;DR: In patients with chronic hepatitis C with or without cirrhosis, peginterferon alfa‐2a (relative to IFN) significantly reduced fibrosis, and the beneficial effects of peginerferon on liver histology are closely related to virologic response.

226 citations

Journal ArticleDOI
TL;DR: In this article, a review of the most recent examples of the three metal ions complexed with monodentate and chelating bidentate to tetradentate ligands to DNA is presented, and an attempt has also been made to rationalize the observed trend in the values of the intrinsic DNA-binding constant in terms of structural and chemical features.

225 citations


Authors

Showing all 15895 results

NameH-indexPapersCitations
Robin M. Murray1711539116362
Frede Blaabjerg1472161112017
Jean Bousquet145128896769
Zhanhu Guo12888653378
Jean Ballet11526346301
Antonio Facchetti11160251885
Michele Pagano9730642211
Frank Z. Stanczyk9362030244
Eleonora Troja9127130873
Francesco Sciortino9053628956
Zev Rosenwaks8977232039
Antonio Russo8893434563
Carlo Salvarani8873031699
Giuseppe Basso8764333320
Antonio Craxì8665939463
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Performance
Metrics
No. of papers from the Institution in previous years
YearPapers
2023147
2022384
20212,977
20202,753
20192,412
20182,250