Background: The primary purpose of our study was to understand the damage in the peripheral nerves of patients with diabetes and to determine the change in patients' reaction rates and perceptions by the age groups, duration of diabetes, fasting plasma glucose and HbA1c values, and compare these with those of the healthy individuals.

Methods: This study was carried out at the Baskent University Hospital Endocrinology and Metabolic Diseases Outpatient Clinic. A total of 64 patients diagnosed with type 2 diabetes and 64 healthy controls were included in the study. Finger tapping, visual, and auditory reaction time tests were performed on the subjects, respectively. The subjects' fasting plasma glucose and HbA1c levels, and the duration of their diabetes were recorded. Analyses were performed using the SPSS version 25. Differences were considered statistically significant when the p-value is <0.05.

Inclusion Criteria:

• Right-handed individuals
• Must be between 18-65 ages
• Must be Type 2 diabetics at least 6 months (for patient group)

Exclusion Criteria:

• use of alcohol-drug or similar substances,
• the use of any medication that may affect neurological functions,
• having color blindness,
• retinopathy,
• neurological disease,
• cancer,
• depression,
• a recent history of surgery,
• rheumatoid arthritis,
• osteoarthritis,
• and advanced osteoarthritis.

The study population consisted of healthy individuals aged between 18-64 years, diagnosed with type 2 diabetes, and resided in Ankara. The sample comprised 128 volunteers, 64 of whom were patients and 64 were controls.