Computerised Assessment of Visual Neglect Symptoms in Peripersonal Space

Status

Terminated

Phases

Study type

Interventional

Source

ClinicalTrials.gov

Registry ID

NCT01740544

Acronym

KMS-Neglect 2

Enrollment

Registered

2012-12-04

Start date

2012-10-31

Completion date

2012-12-31

Last updated

2018-11-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Visual Neglect

Brief summary

Healthy subjects will undergo cathodal stimulation of the right posterior parietal Cortex (PPC) and assessment of neglect-like symptoms in the encircling monitor system (EMS) as well as in a standard clinical test (Test Battery for Attention Performance, TAP, Zimmermann & Fimm, 1993). The aim of this study is to investigate whether cathodal stimulation leads to poorer test performance.

Interventions

OTHERCathodal tDCS

Cathodal tDCS applied over the right PPC

OTHERSham tDCS

Sham tDCS applied over the right PPC

Study design

Allocation

RANDOMIZED

Intervention model

CROSSOVER

Primary purpose

DIAGNOSTIC

Masking

DOUBLE (Subject, Investigator)

Eligibility

Sex/Gender

ALL

Age

18 Years to 85 Years

Healthy volunteers

Yes

Inclusion criteria

* Younger subjects * aged between 18 and 35 years * ability to provide written informed consent * right-handedness * Elderly subjects * aged between 50 and 85 years * ability to provide written informed consent * right-handedness

Exclusion criteria

Design outcomes

Primary

Measure	Time frame	Description
Test performance of young study participants in the encircling monitor system with/without cathodal stimulation	—	Comparison of the young subjects' performance with vs. without transcranial direct current stimulation (tDCS) in the following computerised tests: Star Cancellation (number of omissions, latency & crossing index; based on Rabufetti, 2012), Landmark (reaction times, accuracy; based on Giglia et al., 2011), Visual Detection (reaction times, omissions; based on Sparing et al., 2009), Extinction (number of correct responses; based on Niedeggen & Hoffmann, 2011)

Secondary

Measure	Time frame	Description
Test performance of elderly study participants in the encircling monitor system with/without cathodal stimulation	—	Comparison of the performance with vs. without transcranial direct current stimulation (tDCS) in the following tests: Star Cancellation, Landmark, Visual Detection, Extinction (see above)
Test performance of study participants in the Test Battery for Attention Performance (TAP) with/without cathodal stimulation	—	Comparison of reaction times and number of omissions in the left and right visual field in the TAP subtest Neglect with vs. without tDCS.
Comparison of visual search patterns between neglect patients and healthy subjects with cathodal stimulation	—	Comparison of visual search direction, structuredness (crossing index), and omissions in the Star Cancellation Test

Countries

Germany

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026