The purpose of this study is to evaluate the usefulness of Dynamic Loewenstein's Occupational Therapy and Cognitive Assessment Scale for Geriatrics (DLOTCA-G) in parkinson patients.

The purpose of this study to evaluate the usefulness of Dynamic Loewenstein's Occupational Therapy and Cognitive Assessment Scale for Geriatrics (DLOTCA-G) in the early detection of cognitive impairment in parkinson patients aged 65 and over, with and without dementia.The investigators also aimed to compare the Mini Mental State Assessment Test with DLOTCA-G.

Inclusıon Criteria

• Parkinson's patients aged 65 years and older with and without cognitive impairment (60 patients) and healthy control patients (30 patients)
• Hoehnn Yahr Staging between 1 and 2.5 in patients with Parkinson's diseas
• Confirmed by brain MRI from patients without vascular dementia who routinely attend the Parkinson's follow-up outpatient clinic
• At least primary school graduates
• In patients with Parkinson's dissease patients with cognitive impairment, MMSE below 20 in primary school education level; below 24 in secondary, high school and university education level
• In patients with Parkinson's disease without cognitive impairment, MMSE 20 and above in primary school education level; 24 and above in secondary, high school and university education level Exclusıon Criteria
• Preexisting cognitive impairment
• Psychiatric disorders such as psychotic disorders, mood disorders, alcohol or drug abuse
• Severe language dysfunction and/or bilateral limb motor dysfunction and inability to participate in clinical psychology tests, severe visual and/or auditory impairments
• Patients with significant cerebral atrophy or neurological vascular lesions
• The Geriatric Depression Scale was administered to all participants, and participants with a total score of 13 or more out of 30 points were excluded from the study.

Parkinson's dissease patients