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Nam-Jong Paik

Seoul National University · Medicine

About the Lab

Professor Nam-Jong Paik's research lab specializes in neurorehabilitation engineering, focusing on developing innovative, technology-driven solutions for stroke recovery. The lab explores noninvasive brain stimulation, virtual reality (VR), and mobile-based telerehabilitation systems to enhance motor and language recovery in stroke patients. Key research directions include the design and validation of low-cost, accessible rehabilitation tools using consumer-grade sensors (e.g., Kinect) and mobile devices, with an emphasis on improving patient engagement and accessibility in home-based and community settings. The lab also investigates fall risk factors post-stroke to support safer recovery outcomes.

stroke rehabilitationvirtual reality therapytelerehabilitationmotor recoveryFugl-Meyer Assessment

Research Overview

Papers
334
Total Citations
9,234
Papers (5y)
60
Primary Field
Medicine

Research Output Trend

Figures are computed from collected data and may differ slightly.

Publications per year (5y)
60total
2022
2023
2024
2025
2026
Citations per year (5y)
465total
20222023202420252026

Selected Papers

15
1
Article|192 citations·2010
Effect of Transcranial Direct Current Stimulation on Motor Recovery in Patients with Subacute Stroke
Dae Yul Kim, Jong-Yub Lim, Eun Kyoung Kang, Dae Sang You, Min-Kyun Oh, Byung‐Mo Oh, Nam‐Jong Paik
SJR Q1American Journal of Physical Medicine & Rehabilitation

Our results suggest a potentially beneficial effect of noninvasive cortical stimulation during rehabilitative motor training of patients who have suffered from subacute strokes.

NeurologyNeuroscience
2
Article|163 citations·1999
Quantification of the path of center of pressure (COP) using an F-scan in-shoe transducer
Tai Ryoon Han, Nam‐Jong Paik, Min Sik Im
SJR Q1Gait & Posture
Endocrinology, Diabetes and MetabolismMedicine
3
Article|155 citations·2006
Movement of the hyoid bone and the epiglottis during swallowing in patients with dysphagia from different etiologies
Nam‐Jong Paik, Sang Jun Kim, Ho Jun Lee, Jae Yong Jeon, Jae‐Young Lim, Tai Ryoon Han
SJR Q2Journal of Electromyography and Kinesiology
Speech and HearingHealth Professions
4
Article|131 citations·2016
Upper Extremity Functional Evaluation by Fugl-Meyer Assessment Scoring Using Depth-Sensing Camera in Hemiplegic Stroke Patients
Won‐Seok Kim, Sung‐Min Cho, Dongyoub Baek, Hyunwoo Bang, Nam‐Jong Paik
SJR Q1PLoS ONEOA

Virtual home-based rehabilitation is an emerging area in stroke rehabilitation. Functional assessment tools are essential to monitor recovery and provide current function-based rehabilitation. We developed the Fugl-Meyer Assessment (FMA) tool using Kinect (Microsoft, USA) and validated it for hemiplegic stroke patients. Forty-one patients with hemiplegic stroke were enrolled. Thirteen of 33 items were selected for upper extremity motor FMA. One occupational therapist assessed the motor FMA while

RehabilitationMedicine
5
Article|108 citations·2016
Mobile game-based virtual reality rehabilitation program for upper limb dysfunction after ischemic stroke
Yoon‐Hee Choi, Jeonghun Ku, Hyunmi Lim, Yeo Hyung Kim, Nam‐Jong Paik
SJR Q3Restorative Neurology and NeuroscienceOA

BACKGROUND: Virtual reality (VR) has the potential to provide intensive, repetitive, and task-oriented training, and game-based therapy can enhance patients' motivation and enjoyment. OBJECTIVE: The objective of the present study was to develop a mobile game-based upper extremity VR program for patients who have experienced stroke, and to evaluate the feasibility and effectiveness of the program. METHODS: This randomized, double-blind, controlled trial included 24 patients with ischemic stroke.

RehabilitationMedicine
6
Article|95 citations·2015
A Telerehabilitation Approach for Chronic Aphasia Following Stroke
Yoon‐Hee Choi, Hae Kyung Park, Nam‐Jong Paik
SJR Q1Telemedicine Journal and e-Health

BACKGROUND: Intensive speech therapy improves language function in patients with chronic aphasia, although treatment in the acute phase is more effective than in the chronic phase. Unfortunately, most patients with stroke go untreated due to socioeconomic problems. This study was performed to develop and test a speech therapy-based telerehabilitation program (iAphasia), suitable for use on a mobile device platform, which would expand access to therapy to patients who frequently go untreated. SUB

Cognitive NeuroscienceNeuroscience
7
Article|83 citations·2019
Sarcopenia is an Independent Risk Factor for Dysphagia in Community-Dwelling Older Adults
Seungwoo Cha, Won‐Seok Kim, Ki Woong Kim, Ji Won Han, Hak Chul Jang, Soo Lim, Nam‐Jong Paik
SJR Q1Dysphagia
Speech and HearingHealth Professions
8
Article|64 citations·2011
Association between muscle strength and metabolic syndrome in older Korean men and women: the Korean Longitudinal Study on Health and Aging
Eun Joo Yang, Soo Lim, Jae‐Young Lim, Ki Woong Kim, Hak Chul Jang, Nam‐Jong Paik
SJR Q1Metabolism
PhysiologyMedicine
9
Article|58 citations·2004
Categorization of dysphagia diets with the line spread test11No commercial party having a direct financial interest in the results of the research supporting this article has or will confer a benefit on the author(s) or on any organization with which the author(s) is/are associated.
Nam‐Jong Paik, Tai Ryoon Han, Jin‐Woo Park, Eunkyung Lee, Mi Sun Park, In Koo Hwang
SJR Q1Archives of Physical Medicine and Rehabilitation
Speech and HearingHealth Professions
10
Article|57 citations·2012
Incidence and Risk Factors of Poststroke Falls After Discharge From Inpatient Rehabilitation
Jong Youb Lim, Se Hee Jung, Won‐Seok Kim, Nam‐Jong Paik
SJR Q1PM&R

OBJECTIVE: To investigate the incidence of falls and risk factors for falls in persons who had a stroke. DESIGN: Telephone survey. SETTING: Tertiary university hospital. PATIENTS AND METHODS: Patients who had a stroke and were admitted to the rehabilitation unit between April 2006 and July 2008 were listed and contacted by telephone from February 2009 to August 2009. MAIN OUTCOME MEASUREMENTS: Information obtained from the interviews, which were performed 20 ± 8 months after discharge from inpat

Physical Therapy, Sports Therapy and RehabilitationHealth Professions
11
Article|56 citations·2018
A low cost kinect-based virtual rehabilitation system for inpatient rehabilitation of the upper limb in patients with subacute stroke
Won‐Seok Kim, Sung Min Cho, Seo Hyun Park, Ji-Young Lee, SuYeon Kwon, Nam‐Jong Paik
SJR Q3MedicineOA

BACKGROUND: We designed this study to prove the efficacy of the low-cost Kinect-based virtual rehabilitation (VR) system for upper limb recovery among patients with subacute stroke. METHODS: A double-blind, randomized, sham-controlled trial was performed. A total of 23 subjects with subacute stroke (<3 months) were allocated to sham (n = 11) and real VR group (n = 12). Both groups participated in a daily 30-minute occupational therapy for upper limb recovery for 10 consecutive weekdays. Subjects

RehabilitationMedicine
12
Article|55 citations·2014
Relationship Between Dysphagia and Mild Cognitive Impairment in a Community‐Based Elderly Cohort: The Korean Longitudinal Study on Health and Aging
Eun Joo Yang, Ki Woong Kim, Jae‐Young Lim, Nam‐Jong Paik
SJR Q1Journal of the American Geriatrics Society

OBJECTIVES: To investigate the relationship between dysphagia and mild cognitive impairment (MCI) in older adults residing in an independent-living facility in Korea. DESIGN: Population-based, cross-sectional study. SETTING: Seongnam, Korea. PARTICIPANTS: Korean men and women aged 65 and older living in a typical South Korean city (n = 415) were enrolled in the Korean Longitudinal Study on Health and Aging. MEASUREMENTS: Dysphagia was assessed using the Standardized Swallowing Assessment (SSA).

Speech and HearingHealth Professions
13
Article|55 citations·2020
Low-Frequency Repetitive Transcranial Magnetic Stimulation Over Contralesional Motor Cortex for Motor Recovery in Subacute Ischemic Stroke: A Randomized Sham-Controlled Trial
Won‐Seok Kim, Bum Sun Kwon, Han Gil Seo, Jihong Park, Nam‐Jong Paik
SJR Q1Neurorehabilitation and neural repair

Background Low-frequency repetitive transcranial magnetic stimulation (rTMS) over the contralesional motor cortex (M1) has demonstrated beneficial effects on motor recovery, but evidence among patients with subacute stroke is lacking. We aimed to investigate whether 1-Hz rTMS over the contralesional M1 versus sham rTMS could improve arm function in patients with subacute ischemic stroke when combined with rehabilitative motor training. Methods In total, 77 patients who were within 90 days after

NeurologyNeuroscience
14
Article|51 citations·2013
Incidence of Dysphagia and Serial Videofluoroscopic Swallow Study Findings After Anterior Cervical Discectomy and Fusion
Yu-Sun Min, Won‐Seok Kim, Sung Shik Kang, Jin Man Choi, Jin S. Yeom, Nam‐Jong Paik
SJR Q1Clinical Spine Surgery A Spine Publication

STUDY DESIGN: Prospective study. OBJECTIVE: To prospectively assess the incidence of dysphagia and to present the serial changes of each finding in the videofluoroscopic swallow study (VFSS) after anterior cervical discectomy and fusion (ACDF). SUMMARY OF BACKGROUND DATA: The reported incidence of dysphagia after ACDF has varied widely, and the serial changes of dysphagia using VFSS have not been clearly determined yet. METHODS: Data of 47 patients preoperatively and at 1 week and 1 month postop

SurgeryMedicine
15
Article|47 citations·2015
A Telescreening Tool to Detect Aphasia in Patients with Stroke
Yoon‐Hee Choi, Hae Kyung Park, Ki-hwan Ahn, Yeon-joo Son, Nam‐Jong Paik
SJR Q1Telemedicine Journal and e-Health

This telescreening test may overcome the limitations of test administration and may be a convenient and cost-effective alternative to the existing aphasia screening tests for patients with stroke.

EpidemiologyMedicine

Research Areas

RehabilitationNeurologyCognitive NeuroscienceSpeech and HearingSurgeryPhysical Therapy, Sports Therapy and Rehabilitation

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