OBJECTIVE While Parkinson's disease (PD) has traditionally been defined by motor symptoms, many researches have indicated that mild cognitive impairment is common in non-demented PD patients. The purpose of this study was to compare verbal fluency performance in non-demented Parkinson's disease patients with healthy controls. METHOD In this cross-sectional study thirty non-demented Parkinson'...

Verbal fluency test is a useful method to evaluate cognitive executive functions. Studies have shown that both types of verbal fluency test (phonemic and semantic) are influenced by brain damage. This test is rarely used by clinicians because it takes too much time to perform. Therefore, we decided to increase its speed and accuracy by designing a verbal fluency test application in Persian lang...

OBJECTIVES Functional neuroimaging of the brain is a widely used method to study cognitive functions. The aim of this study was to compare the activity of the brain during performance of the tasks of phonemic and semantic fluency with the paced-overt technique in terms of prolonged activation of the brain. METHODS The study included 17 patients aged 20-40 years who were treated in the past fo...

BACKGROUNDS An early and transient verbal fluency (VF) decline and impairment in frontal executive function, suggesting a cognitive microlesion effect may influence the cognitive repercussions related to subthalamic nucleus deep brain stimulation (STN-DBS). METHODS Neuropsychological tests including semantic and phonemic verbal fluency were administered both before surgery (baseline), the thi...

According to the frontal inhibition account of hypnosis, many of the phenomena traditionally associated with hypnosis, such as the suspension of reality testing and loss of planning functions, come about because hypnosis produces decrements in frontal lobe performance. In line with this view, previous studies investigating the frontal inhibition account of hypnosis have found that phonemic flue...

The present study explores the relationship between the short version of Korean Boston Naming Test (S-K-BNT), Controlled Oral Word Association Test phonemic (COWAT-/k/) & semantic (COWAT-Animal), and Mild Cognitive Impairment (MCI) & Mild Dementia. Total of 594 communitydwelling seniors over 60 years of age consisting of normal elderly, (n=333) those with MCI (n=241), and those with mild dement...

Word finding difficulty is a known impairments in multiple sclerosis (MS). The purpose of this study is to adapt homophone meaning generation test to Persian language, and then examine word storage and access in multiple sclerosis patients through these three word-finding tests. This study examined the word retrieval in 90 Persian speaking patients with multiple sclerosis and 90 matched healthy...