Please select the eligibility criteria that correspond to the clinical trial below.
Title: Optokinetic Stimulation for the Treatment of Hemispatial Neglect - Safety and Efficacy Studies
Brief Summary: Hemispatial neglect is a disorder where the patient has difficulty attending to objects and information in the left side of space, which occurs following strokes to the right side of the brain. This project is designed to help us understand how optokinetic stimulation treats the symptoms of hemispatial neglect.


Options:
A: Inclusion Criteria:

1. Ischemic stroke affecting the right hemisphere, confirmed by CT or MRI.
2. Persistent neglect for one month after ictus (confirmed by BIT).
3. Prestroke functional independence (modified Rankin Scale score 0-2).
4. Between 18-90 years of age

Exclusion Criteria:

1. Patients younger than 18.
2. Patients who do not understand verbal or written English (ie.need of translaters)
3. bilateral infarcts (Confirmed by CT, MRI)
4. Dementia (MOCA, Score \<26).
5. Neurological Disease (eg. Parkinson's Disease, epilepsy, MS)
6. Significant morbidity (eg cancer, severe cardiac failure) likely to affect participation.
7. Alcohol excess (more than 50/40 units a week for men/women respectively).
8. Patients who fall under the exclusion criteria for TDCS which includes patients suffering from a stroke related seizure :

History of epilepsy, medications or psychoactive drugs that can lower seizure threshold \[imipramine, amitriptyline, doxepine, nortriptyline, maprotiline, chlorpromazine, clozapine, foscarnet, ganciclovir, ritonavir, amphetamines, cocaine, (MDMA, ecstasy), phencyclidine (PCP, angel dust), ketamine, gammahydroxybutyrate (GHB), alcohol, theophylline\]. Withdrawal from alcohol, barbiturates, benzodiazepines, meprobamate, chloral hydrate. Patients who are pregnant or have suffered from a stroke-related seizure.
B: Inclusion Criteria:

* ischemic or hemorrhagic stroke, confirmed by medical diagnoses compatible with a unilateral right lesion involvement (i.e. left hemiplegic), exhibited left visual field inattention or unilateral neglect by obtaining a total score of star cancellation subtest in the conventional battery of the Behavioural Inattention Test ≤ 51 (out of 54);
* stroke with onset of neurological condition ≤ 6 months previously;
* have normal or corrected-to-normal visual acuity better than 20/60 (6/18) in the better eye;
* with hemiplegic upper extremity functional levels 3-7 as rated by Functional Test for the Hemiplegic Upper Extremity and is able to move against gravity;
* ability to understand and follow simple verbal instructions, with Mini-mental State Examination ≥ 21;
* ability to participate in a therapy session lasting at least 30 minutes;
* consent to participant in the study

Exclusion Criteria:

* prior neurological or psychiatric disorders;
* severe spasticity (Modified Ashworth Scale \>3) over paretic arm;
* history of recent Botox injection or acupuncture to the paretic arm within the past three months;
* participation in another clinical study elsewhere apart from the study site during recruitment
C: Inclusion Criteria:

* Patients with right hemispheric lesions resulting in hemispatial neglect as confirmed by Behavioral Inattention Test or Center of Cancellation Test

Exclusion Criteria:

* Reduced vision
* Documented vestibular disorder
D: Inclusion Criteria:

* Experience mild to severe symptoms of neglect (as measured by the Sunnybrook Neglect Assessment Procedure and/or as determined based on clinical judgment of the treating team)
* Be willing to participate
* Be able to consent to participate
* Be medically stable
* Have normal or corrected to normal vision
* Be able to point to targets presented on a computer screen.

Exclusion Criteria:

* Other neurological disease (e.g., Multiple Sclerosis, Parkinsons disease)
* Dementia

Answer: C