Ayhan Koksal

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Peduncular hallucinosis usually occurs due to vascular or infectious midbrain lesions or brain stem compression by tumors. We present a peduncular hallucinosis case in a 63-year-old female with brain stem infarction, which can easily be misdiagnosed as a psychiatric disorder.
AIM In this study, cognitive functions of 9 patients developing parkinsonism due to chronic manganese intoxication by intravenous methcathinone solution were investigated using detailed neuropsychometric tests. METHOD Attention deficit, verbal and nonverbal memory, visuospatial function, constructive ability, language, and executive (frontal) functions of(More)
Our aim in this research is investigating the hypothesis of biochemical changes in frontal cortex and thalamocortical pathways in juvenile myoclonic epilepsy (JME) and the interaction between the biochemical changes and cortical functions. Magnetic resonance spectroscopy (MRS) was applied to 20 JME patients and 20 controls for measuring N-acetyl aspartate(More)
Nonmotor symptoms (NMS) of idiopathic Parkinson’s disease (IPD), specifically fatigue, depression and sleep disturbances, are important contributors for worse quality of life and poor patient outcomes. The aim of this research is to determine the relationship between fatigue and other NMS and the independent effect of fatigue on health-related quality of(More)
OBJECTIVE To investigate which part of the autonomic system is mainly involved and assess the sensitivity of face sympathetic skin response in cluster headache. MATERIAL AND METHODS The study sample consisted of 19 drug-free cluster headache patients (16 males, three females) and 19 healthy volunteers. Demographic features and pain characteristics were(More)
Chiasmal optic neuritis (ON) is a rare presentation mostly associated with inflammatory demyelinating disorders and may sometimes be the initial manifestation of multiple sclerosis (MS) or neuromyelitis optica. Differential diagnoses include systemic disorders (sarcoidosis, systemic lupus erythematosus) and infections (tuberculosis, Epstein– Barr or Lyme(More)
BACKGROUND Manganese toxicity may lead to a levodopa-resistant akinetic-rigid syndrome. Pathological changes occur mostly in the pallidium and stratium. MATERIALS AND METHODS We report seven patients with a new form of chronic manganese toxicity due to long-term intravenous use of a solution consisting of ephedrine, acetylsalicylic acid and potassium(More)
OBJECTIVE Electrophysiological diagnosis of ulnar nerve entrapment at the wrist is sometimes difficult. The aim was to evaluate the diagnostic role of ulnar nerve stimulation above and below the Guyon channel in ulnar nerve entrapment at the wrist. METHODS Supramaximal ulnar nerve stimulation at the wrist and palm, in addition to the standard nerve(More)
Anti-N-methyl-D-aspartic acid receptor (NMDAR) encephalitis is a rare and recently described disease that is characterized by a neuropsychiatric syndrome and associated with ovarian teratomas [1–3]. We report a 25-year-old female who presented with insomnia, agitation, irritability and fear of death which began 3 months after a normal delivery. Shortly(More)