Clinical trials: Occipital Cortex
Stroke, Ischemic, Quadrantanopia
Visual Rehabilitation After Occipital Stroke
This research aims to examine changes in plastic potential of the visual system with time from stroke affecting primary visual cortex.
- Conditions
- Stroke, Ischemic, Quadrantanopia, Vision Loss Partial, Visual Field Defect, Peripheral
- Trial name
- NCT04798924
- Testing
- Subacute Training in the intact field, Subacute Training in the blind field, Chronic Training in the blind field
- Where
- United States
- Volunteers
- 60 people
- Sponsor
- University of Rochester
Blindness
Brain Plasticity of Verbal Memory in the Blind
This study will examine whether blind people develop changes in the brain that improve memory function. Previous studies have shown that blind people, on average, perform better in memory tasks than sighted people.
- Trial name
- NCT00059189
- Testing
- Magstim Rapid Magnetic Stimulator
- Where
- United States
- Volunteers
- 85 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Stroke, Ischemic, Hemianopia, Homonymous
Statistical Learning as a Novel Intervention for Cortical Blindness
This project aims to develop a novel visual training paradigm for use in visually-intact participants and those sufferings from stroke-induced visual impairments.
- Conditions
- Stroke, Ischemic, Hemianopia, Homonymous, Hemianopsia, Occipital Lobe Infarct
- Trial name
- NCT06578117
- Testing
- Vision Training and Learning Task
- Where
- United States
- Volunteers
- 30 people, healthy volunteers welcome
- Sponsor
- University of Rochester
Methamphetamine Use Disorder, Substance Use Disorder
Closed-loop TBS Targeting rPO for the Core Clinical Features of Methamphetamine Use Disorder
The goal of this clinical trial is to evaluate whether closed-loop theta-burst stimulation (TBS) targeting the right parietal-occipital cortex (rPO) can improve core clinical symptoms in individuals with methamphetamine use…
- Conditions
- Methamphetamine Use Disorder, Substance Use Disorder, Cue-reactivity, Craving
- Trial name
- NCT07775807
- Testing
- Closed-loop Theta-Burst Stimulation (TBS) Targeting rPO
- Where
- China
- Volunteers
- 5 people
- Sponsor
- Shanghai Mental Health Center
Vision Loss Partial, Vision; Loss, Both Eyes
Understanding Visual Processing After Occipital Stroke
The purpose of this study is to investigate how visual orientation discrimination and metacognition (i.e., perceptual confidence) are affected by occipital stroke that causes hemianopia and quadrantanopia in adults.
- Conditions
- Vision Loss Partial, Vision; Loss, Both Eyes, Hemianopia, Homonymous, Hemianopia
- Trial name
- NCT06352086
- Sponsor
- University of Rochester
Stroke, Visual Field Defect
Visual Restoration Using Focused Ultrasound Stimulation and Immersive Virtual Reality After Stroke
This research will explore if brain stimulation combined with virtual reality therapy improves visual impairment. The stimulation technique is called low-intensity focused ultrasound stimulation (LIFUS).
- Conditions
- Stroke, Visual Field Defect, Visual Field Defect Following Cerebrovascular Accident, Hemianopia
- Trial name
- LIFU-IVR (NCT06875206)
- Testing
- Low-intensity focused ultrasound, Immersive virtual reality, Inactive Low-intensity focused ultrasound
- Where
- United States
- Volunteers
- 28 people
- Sponsor
- Duke University
Retinitis Pigmentosa (RP), Rod Cone Dystrophy
Brain Stimulation Effects on Orientation and Mobility Skills in Adults With Vision Impairment
This pilot clinical trial evaluates whether non-invasive brain stimulation improves the orientation and mobility (O\&M) skills of individuals with constricted visual fields in both eyes. The study is composed of three visits.
- Conditions
- Retinitis Pigmentosa (RP), Rod Cone Dystrophy, Visually Impaired Persons, Peripheral Visual Field Defect of Both Eyes
- Trial name
- NCT07341763
- Testing
- Active hf-tRNS.
- Where
- Canada
- Volunteers
- 20 people
- Sponsor
- University of Waterloo
Vision Loss Partial, Vision; Loss, Both Eyes
Effect of Visual Retraining After Stroke
This project is intended to collect data using standard clinical tests and psychophysics to quantify the effect of visual cortical damage on the structure of the residual visual system, visual perception, spatial awareness, and…
- Conditions
- Vision Loss Partial, Vision; Loss, Both Eyes, Hemianopia Homonymous, Hemianopia
- Trial name
- urochester (NCT06121219)
- Testing
- Training in the Blind Field
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Rochester
Disorder of Consciousness, MMN
Excitatory Prefrontal Weak Current Stimulation in Vegetative Patients
In response to "conscious" EEG findings related to detectable cognitive function that reliably denote awareness in vegetative state patients, in the current study, we will assess the covert conscious EEG activity (as well as…
- Conditions
- Disorder of Consciousness, MMN, Modification of Cognitive Status Indication, Anoxic Brain Damage
- Trial name
- VEG-TDCS (NCT04614792)
- Testing
- Transcranial direct current stimulation
- Where
- Israel
- Volunteers
- 16 people
- Sponsor
- Oded Meiron
Amblyopia, Anisometropic Ambyopia
Visual Cortex Stimulation in Patients With Amblyopia
This study will examine whether direct current (DC) polarization (electrical stimulation) of the visual cortex can cause a temporary improvement of vision in an amblyopic eye of an adult.
- Conditions
- Amblyopia, Anisometropic Ambyopia, Amblyopia, Suppression
- Trial name
- NCT00097162
- Testing
- Anodal stimulation
- Where
- United States
- Volunteers
- 10 people
- Sponsor
- National Eye Institute (NEI)
Occipital Cortex, Prefrontal Cortex
Brain Connectivity Between Visual Input and Movement
This study will explore how the areas in the brain are connected to link what people see to what they do; that is, how they use what they see to help guide their movements.
- Conditions
- Occipital Cortex, Prefrontal Cortex, Healthy
- Trial name
- NCT00376545
- Where
- United States
- Volunteers
- 25 people
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Blindness, Brain Mapping
The Connection Between Areas in the Brain of Blind Patients
The purpose of this study is to test the belief that specific areas of the brain are connected differently in blind patients than patients with sight.
- Conditions
- Blindness, Brain Mapping, Healthy
- Trial name
- NCT00001926
- Testing
- O15, Cadwell rTMS
- Where
- United States
- Volunteers
- 45 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Stroke, Ischemic, Quadrantanopia
Vision Loss Impact on Navigation in Virtual Reality
The purpose of this research is to better understand the impact of cortically-induced blindness (CB) and the compensatory strategies subjects with this condition may develop on naturalistic behaviors, specifically, driving.
- Conditions
- Stroke, Ischemic, Quadrantanopia, Hemianopsia, Homonymous, Hemianopia, Homonymous
- Trial name
- NCT06047717
- Testing
- Virtual Reality Driving Task
- Where
- United States
- Volunteers
- 40 people, healthy volunteers welcome
- Sponsor
- University of Rochester
Cortical Blindness, Stroke Ischemic
Mechanisms of Visual Restoration After Occipital Stroke
This project will collect brain imaging data to quantify the effects of early visual cortex damage and visual training interventions on the structure and function of the residual visual system.
- Conditions
- Cortical Blindness, Stroke Ischemic, Vision Loss Partial, Visual Fields Hemianopsia
- Trial name
- MOVROS (NCT07134777)
- Testing
- MRI
- Where
- United States
- Volunteers
- 100 people, healthy volunteers welcome
- Sponsor
- University of Rochester
Cortical Plasticity
Network Effects of Left M1 rTMS: A TMS-EEG Study
This study investigates the modification of connectivity patterns in response to one session of active repetitive transcranial magnetic stimulation (rTMS) applied to the primary motor cortex.
- Trial name
- CORTEX-4 (NCT07580989)
- Testing
- rTMS
- Where
- Denmark
- Volunteers
- 20 people, healthy volunteers welcome
- Sponsor
- Aalborg University
Migraine, Chronic Headache
Does Topiramate Adjust the Excitability of the Brain in Migraine Sufferers?
The purpose of the study is to determine by the use of non-invasive magnetic stimulation if the medication Topiramate adjusts the excitability of the migraine sufferer's brain.
- Trial name
- NCT00286923
- Testing
- Topiramate
- Where
- United States
- Volunteers
- 10 people, healthy volunteers welcome
- Sponsor
- Emerald City Headache Organization
Vision, Blind
GABA Levels in the Brains of Blind People
In blind individuals, the occipital cortex becomes capable of processing tactile and auditory information, a phenomenon described as crossmodal plasticity.
- Trial name
- NCT00357409
- Where
- United States
- Volunteers
- 39 people, healthy volunteers welcome
- Sponsor
- National Institute of Neurological Disorders and Stroke (NINDS)
Visual Field Defect, Peripheral, Stroke
Improving Visual Field Deficits With Noninvasive Brain Stimulation
This is a randomized, pilot interventional study in participants with visual field deficit (VFD) caused by cortical lesion. Damage to the primary visual cortex (V1) causes a contra-lesional, homonymous loss of conscious vision…
- Conditions
- Visual Field Defect, Peripheral, Stroke, Visual Impairment, Hemianopsia
- Trial name
- NCT05085210
- Testing
- transcranial random noise stimulation (tRNS), Computer Based Visual Training, Virtual Reality Based Visual Training
- Where
- United States
- Volunteers
- 24 people
- Sponsor
- Beth Israel Deaconess Medical Center