Z. Tunca

Publications116
h-index18
Citations1,117
Highly Influential Citations59
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The γ Dor variable HR 8799: results from a multisite campaign
In this paper, we present the results of a multisite photometric campaign devoted to the γ Doradus type variable HR 8799. From Johnson and Stromgren data, we were able to identify three independent… Expand
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A double-blind controlled study of adjunctive treatment with risperidone in schizophrenic patients partially responsive to clozapine: efficacy and safety.
BACKGROUND Several open trials and case studies have reported beneficial effects following the addition of risperidone for partial responders to clozapine. The purpose of this study was to carry out… Expand
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Tc-99m HMPAO brain perfusion SPECT in drug-free obsessive-compulsive patients without depression
The aim of this study was to confirm prior results of brain-imaging studies on obsessive-compulsive disorder (OCD) in a sample of Turkish patients, as a cross-cultural study. Tc-99m HMPAO brain… Expand
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Alterations in BDNF (brain derived neurotrophic factor) and GDNF (glial cell line-derived neurotrophic factor) serum levels in bipolar disorder: The role of lithium.
OBJECTIVE Brain-derived neurotrophic factor (BDNF) has been consistently reported to be decreased in mania or depression in bipolar disorders. Evidence suggests that Glial cell line-derived… Expand
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Reevaluation of serum cortisol in conversion disorder with seizure (pseudoseizure)
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Prevalence and risk factors of depression among community dwelling elderly.
Depression in the elderly is associated with increased morbidity and mortality. The purpose of this study was to determine the prevalence and risk factors of depression among community-dwelling older… Expand
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Is conversion disorder biologically related with depression?: a DST study
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Brain oscillatory responses in patients with bipolar disorder manic episode before and after valproate treatment
BACKGROUND GABA/Glutamatergic dysfunction and neural circuits which regulate cognitive processing are involved in the underlying pathology of bipolar disorder. Event related oscillatory… Expand
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Reliability and validity of revised Turkish version of Mini Mental State Examination (rMMSE‐T) in community‐dwelling educated and uneducated elderly
To evaluate the reliability and validity of the revised Turkish version of Mini Mental State Examination (rMMSE‐T) in educated and uneducated community‐dwelling elderly, to re‐organize the present… Expand
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Neuroanatomical correlates of genetic risk for bipolar disorder: A voxel-based morphometry study in bipolar type I patients and healthy first degree relatives.
BACKGROUND Bipolar disorder (BD) is a highly heritable mental illness which is associated with neuroanatomical abnormalities. Investigating healthy individuals at high genetic risk for bipolar… Expand
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