---
title: Determine if sleep affects thinking
nct_id: NCT07536490
status: RECRUITING
sponsor: Ankara University
study_type: OBSERVATIONAL
canonical_url: "https://parkinsonspathways.com/trial/NCT07536490"
clinicaltrials_gov: "https://clinicaltrials.gov/study/NCT07536490"
last_fetched: "2026-06-02T14:00:50.922Z"
source: "Parkinson's Pathways (curated)"
---
# Determine if sleep affects thinking

**Goal (in five words):** Determine if sleep affects thinking

**Official Title:** Investigation of the Relationship Between Sleep Quality, Cognitive Functions, and Disease Severity in Patients With Parkinson's Disease

**Trial ID:** [NCT07536490](https://clinicaltrials.gov/study/NCT07536490)

## Key Facts

- **Status:** RECRUITING
- **Study Type:** OBSERVATIONAL
- **Sponsor:** Ankara University
- **Target Enrollment:** 75 participants
- **Start Date:** 2026-05-10
- **Completion Date:** 2026-08-15
- **Conditions:** Parkinson Disease

## Summary For Families

The goal is to see whether poorer sleep is linked with worse thinking skills and greater Parkinson's severity, to help clarify if sleep problems track with cognitive decline or disease progression. The team will observe and compare sleep quality measures with cognitive testing like the MoCA and clinical staging with the Hoehn and Yahr scale, they are not testing a drug or therapy but looking for patterns that could guide future treatments. The trial is enrolling people age 40 to 65 with neurologist-confirmed Parkinson's, Hoehn and Yahr stage 1 to 3 and MoCA scores of 21 or higher, and excludes those with major communication, visual, heart, or other neurologic conditions.

## Eligibility

- **Minimum age:** 40 Years
- **Maximum age:** 65 Years
- **Sex:** ALL

### Full Criteria

```
Inclusion Criteria:

* Age between 40 and 65 years
* Diagnosis of Parkinson's disease confirmed by a neurologist
* Modified Hoehn and Yahr stage between 1 and 3
* Montreal Cognitive Assessment (MoCA) score ≥21

Exclusion Criteria:

* Difficulty in verbal communication
* Use of walking aid
* Severe visual impairment or additional neurological disorder
* Presence of congestive heart failure
* Any medical condition preventing participation
```

## Locations (1)

- Hacettepe University, Ankara, Ankara, Turkey (Türkiye) _(39.9199, 32.8543)_
  - Büşra Seçkinoğulları Korkusuz, PhD — (CONTACT) — 05442436914 — bskorkusuz@ankara.edu.tr

## Central Contacts

- Büşra Seçkinoğulları Korkusuz, PhD — (CONTACT) — +905442436914 — bskorkusuz@ankara.edu.tr

---

*Canonical: https://parkinsonspathways.com/trial/NCT07536490*  
*HTML version: https://parkinsonspathways.com/trial/NCT07536490*  
*Source data: https://clinicaltrials.gov/study/NCT07536490*