Wyniki wyszukiwania dla: Panagiotis Simos

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artykuł

Well‐being trajectories in breast cancer and their predictors: A machine‐learning approach

Evangelos C. Karademas, Eugenia Mylona, Ketti Mazzocco, Ruth Pat‐Horenczyk, więcej

ObjectiveThis study aimed to describe distinct trajectories of anxiety/depression symptoms and overall health status/quality of life over a period of 18 months following a breast cancer diagnosis, and identify the medical, socio‐demographic, lifestyle, and psychological factors that predict these trajectories.Methods474 females (mean age = 55.79 years) were enrolled in the first weeks after surgery...

artykuł

Psychological and somatic symptoms among breast cancer patients in four European countries: A cross‐lagged panel model

Ilan Roziner, Shlomit Perry, Rawan Dahabre, Gabriella Bentley, więcej

Stress and Health > 39 > 2 > 474 - 482

Psychological and physical health among women with breast cancer are linked. However, more research is needed to test the interrelations between psychological and somatic symptoms, over time and throughout the different phases of breast cancer treatment, to determine when and which interventions should be prioritized. Six hundred and eighty nine women from four countries (Finland, Israel, Italy and...

artykuł

T2 Relaxometry Evidence of Microstructural Changes in Diffusely Abnormal White Matter in Relapsing–Remitting Multiple Sclerosis and Clinically Isolated Syndrome: Impact on Visuomotor Performance

Efrosini Papadaki, Vasileios Mastorodemos, Theodora Panou, Styliani Pouli, więcej

Journal of Magnetic Resonance Imaging > 54 > 4 > spcone - spcone

Axial sections of the last echo of the multi‐echo spin echo (MESE) sequence (echo time = 214.4 MSEC), fluidattenuated inversion recovery (Flair) and T1 magnetization prepared ‐ rapid gradient echo (MPRAGE) sequences (Upper Row), and maps of short t2, long t2, and myelin water fraction (MWF) values (Lower Row) from a representative relapsing–remitting multiple sclerosis (RR‐MS) patient. Regions of...

artykuł

T2 Relaxometry Evidence of Microstructural Changes in Diffusely Abnormal White Matter in Relapsing–Remitting Multiple Sclerosis and Clinically Isolated Syndrome: Impact on Visuomotor Performance

Efrosini Papadaki, Vasileios Mastorodemos, Theodora Panou, Styliani Pouli, więcej

Journal of Magnetic Resonance Imaging > 54 > 4 > 1077 - 1087

Background Although diffusely abnormal white matter (DAWM) is commonly seen in multiple sclerosis (MS), it is rarely considered in clinical/imaging studies. Purpose To evaluate quantitative markers of microstructural changes in DAWM of patients with clinically isolated syndrome (CIS) and relapsing–remitting MS (RR‐MS) in relation to MS lesions and degree of neurocognitive impairment, by using a...

artykuł

Cognitive, emotional, and behavioral mediators of the impact of coping self‐efficacy on adaptation to breast cancer: An international prospective study

Evangelos C. Karademas, Panagiotis Simos, Ruth Pat‐Horenczyk, Ilan Roziner, więcej

Psycho‐Oncology > 30 > 9 > 1555 - 1562

Objective The main objective of this prospective multicenter study was to examine whether illness representations of control, affect, and coping behaviors mediate the effects of self‐efficacy to cope with cancer on psychological symptoms and overall quality of life, in breast cancer patients. Method Data from 413 women (Mean age = 54.87; SD = 8.01), coming from four countries (i.e., Finland, Israel,...

artykuł

Associations between sleep duration and cognitive impairment in mild cognitive impairment

Maria Basta, Panagiotis Simos, Alexandros Vgontzas, Eirini Koutentaki, więcej

Journal of Sleep Research > 28 > 6 > n/a - n/a

The prevalence of mild cognitive impairment (MCI) increases among elderly people and is associated with a high risk of dementia. Identifying factors that may contribute to the progress of MCI to dementia is critical. The objective of this study was to examine the association of objective sleep with cognitive performance in MCI patients. A subsample of 271 participants with a diagnosis of probable...

artykuł

‘Suicide rates in Crete, Greece during the economic crisis: the effect of age, gender, unemployment and mental health service provision’

Maria Basta, Alexandros Vgontzas, Anastasia Kastanaki, Manolis Michalodimitrakis, więcej

BMC Psychiatry > 2018 > 18 > 1 > 1-8

Background Recently, suicides in Greece have drawn national and international interest due to the current economic crisis. According to published reports, suicides in Greece have increased up to 40% and Crete has been highlighted as an area with the sharpest increase. Aim To investigate the suicide mortality rates in Crete between 1999 and 2013 and their association with the economic crisis. Methods...

artykuł

Association between insomnia symptoms and cognitive impairment in the Cretan Aging Cohort

Maria Basta, Panagiotis Simos, Antonios Bertsias, George Duijker, więcej

European Geriatric Medicine > 2018 > 9 > 5 > 697-706

Purpose Population aging, characteristic of modern Western societies, is associated with various forms of cognitive decline. Insomnia/insomnia-type symptoms have been reported as modifiable risk factors for cognitive decline. The objective of this study was to examine, in a comprehensive way (a) the prevalence and the risk factors associated with insomnia-type symptoms and (b) the association of insomnia-type...

artykuł

Self-reported fatigue as a risk index for dementia diagnosis

Symeon H. Panagiotakis, Panagiotis Simos, Ioannis Zaganas, Maria Basta, więcej

European Geriatric Medicine > 2018 > 9 > 2 > 211-217

Introduction Cognitive impairment and frailty are major problems of older age. This study aims to explore the association between frailty and cognitive impairment in a rural cohort of older subjects in southern Europe (Cretan Aging Cohort). Methods Community-based, primary care, cross-sectional, study in the Heraklion Prefecture, Crete, Greece. Four hundred and two persons aged 60–100 years from...

artykuł

Adiponectin levels may help assess the clinical repercussions of obesity irrespective of body mass index

Eirini Dermitzaki, Pavlina D. Avgoustinaki, Eirini C. Spyridaki, Panagiotis Simos, więcej

Hormones > 2017 > 16 > 3 > 271-281

OBJECTIVE Adiponectin is the major product of adipose tissue. The aim of this study was to associate adiponectin levels with adipose tissue and metabolic indices. DESIGN Plasma samples of 274 non-diabetic volunteers were collected to evaluate for adiponectin, inflammatory markers, insulin and lipid parameters. Body fat composition was measured by DEXA. RESULTS As expected, adiponectin levels correlated...

artykuł

Adaptation to inflammatory rheumatic disease: Do illness representations predict patients’ physical functioning over time? A complex relationship

Evangelos C. Karademas, Georgia Dimitraki, Emmanouil Papastefanakis, Georgia Ktistaki, więcej

Journal of Behavioral Medicine > 2018 > 41 > 2 > 232-242

Patients with an inflammatory rheumatic disease (IRD), are often faced with significant limitations in physical functioning. Illness representations are a key-factor of their illness-related experience. Our aim was to examine (a) whether illness representations can predict or only reflect IRD patients’ physical functioning over time, and (b) the specific pathways through which representations and...

artykuł

Quantitative comparison of motion history image variants for video-based depression assessment

Anastasia Pampouchidou, Matthew Pediaditis, Anna Maridaki, Muhammad Awais, więcej

EURASIP Journal on Image and Video Processing > 2017 > 2017 > 1 > 1-11

Depression is the most prevalent mood disorder and a leading cause of disability worldwide. Automated video-based analyses may afford objective measures to support clinical judgments. In the present paper, categorical depression assessment is addressed by proposing a novel variant of the Motion History Image (MHI) which considers Gabor-inhibited filtered data instead of the original image. Classification...

rozdział

Classifying children with reading difficulties from non-impaired readers via symbolic dynamics and complexity analysis of MEG resting-state data

Stavros I. Dimitriadis, Panagiotis Simos, Nikolaos A. Laskaris, Spiros Fotopoulos, więcej

2016 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT) > 333 - 336

2016 IEEE International Symposium on Signal Processing and Information Technology (ISSPIT)

Magnetoencephalography (MEG) is a brain imaging method affording real-time temporal, and adequate spatial resolution to reveal aberrant neurophysiological function associated with dyslexia. In this study we analyzed sensor-level resting-state neuromagnetic recordings from 25 reading-disabled children and 27 non-impaired readers under the notion of symbolic dynamics and complexity analysis. We compared...

rozdział

Video-based depression detection using local Curvelet binary patterns in pairwise orthogonal planes

Anastasia Pampouchidou, Kostas Marias, Manolis Tsiknakis, Panagiotis Simos, więcej

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC) > 3835 - 3838

2016 38th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

Depression is an increasingly prevalent mood disorder. This is the reason why the field of computer-based depression assessment has been gaining the attention of the research community during the past couple of years. The present work proposes two algorithms for depression detection, one Frame-based and the second Video-based, both employing Curvelet transform and Local Binary Patterns. The main advantage...

artykuł

Linking family cohesion and flexibility with expressed emotion, family burden and psychological distress in caregivers of patients with psychosis: A path analytic model

Katerina Koutra, Panagiotis Simos, Sofia Triliva, Christos Lionis, więcej

Psychiatry Research > 2016 > 240 > C > 66-75

The present study aimed to evaluate a path analytic model accounting for caregivers’ psychological distress that takes into account perceived family cohesion and flexibility, expressed emotion and caregiver's burden associated with the presence of mental illness in the family. 50 first-episode and 50 chronic patients diagnosed with schizophrenia or bipolar disorder (most recent episode manic severe...

artykuł

Impaired family functioning in psychosis and its relevance to relapse: a two-year follow-up study

Katerina Koutra, Sofia Triliva, Theano Roumeliotaki, Maria Basta, więcej

Comprehensive Psychiatry > 2015 > 62 > Complete > 1-12

The aim of the present study was to investigate whether dysfunctional family functioning contributes to relapse over a two-year follow-up period in patients experiencing their first episode of psychosis (FEP) and chronic patients with psychosis.The sample consisted of 100 remitted patients (50 FEP and 50 chronic) diagnosed with schizophrenia (82%) or bipolar disorder with most recent episode manic...

artykuł

A response to the article of Lau et al. “A systematic review on MEG and its use in the presurgical evaluation of localization related epilepsy”, Epilepsy Research 2008;79(May (2–3)):97–104

Andrew C. Papanicolaou, Eduardo Castillo, Ekaterina Pataraia, James Wheless, więcej

Epilepsy Research > 2008 > 82 > 2-3 > 237

artykuł

Working Memory in Schizophrenia: An EEG Study Using Power Spectrum and Coherence Analysis to Estimate Cortical Activation and Network Behavior

Ellie Pachou, Michael Vourkas, Panagiotis Simos, Dirk Smit, więcej

Brain Topography > 2008 > 21 > 2 > 128-137

This study examined regional cortical activations and cortico-cortical connectivity in a group of 20 high-functioning patients with schizophrenia and 20 healthy controls matched for age and sex during a 0- and a 2-back working memory (WM) task. An earlier study comparing schizophrenia patients with education level-matched healthy controls revealed less “optimally” organized network during the 2-back...

artykuł

Dynamic Brain Activation Patterns for Face Recognition: A Magnetoencephalography Study

Dongwook Lee, Panagiotis Simos, Stephen M. Sawrie, Roy C. Martin, więcej

Brain Topography > 2005 > 18 > 1 > 19-26

Summary: The present study used magnetoencephalography (MEG) to investigate the spatiotemporal profile of neurophysiological activity associated with recognition of recently encountered human faces in seventeen healthy right-handed adults. Activity sources modeled as instantaneous equivalent current dipoles were found in ventral occipito-temporal regions during the early stages of stimulus processing...

artykuł

Changes in Linear and Nonlinear EEG Measures as a Function of Task Complexity: Evidence for Local and Distant Signal Synchronization

Sifis Micheloyannis, Michael Vourkas, Manolis Bizas, Panagiotis Simos, więcej

Brain Topography > 2002 > 15 > 4 > 239-247

The purpose of the present study was threefold: First, to replicate previous findings of changes in local gamma band power as a function of the complexity of a visuo-semantic processing task, second, to extend these findings in tasks delivered in the auditory modality, and third to explore the use of non-linear algorithms as indices of complexity and distant synchronization in the EEG signal. EEG...

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