Search Results Within Category "Vision & Eyes"
Functional magnetic resonance imaging (fMRI) and psychophysical studies of sensory perception and cognition
The purpose of this study is (1) to understand how the brain processes sensory information and (2) how this is affected by factors like blindness or synesthesia. In addition to behavioral testing, the study will use functional magnetic resonance imaging (fMRI) which enables us to take pictures of the brain while you are doing a task, using an instrument called an MRI scanner.
Participants will perform simple behavioral tasks either stand-alone or while being scanned; they may also complete questionnaires or rating scales.
Amount varies depending on the study
Normal or corrected-to-normal vision
No other sensory deficits
Adults who experience synesthesia
Must pass MRI safety screen (if applicable)
Minors under the age of 18
Individuals who fail the MRI safety screen (may still do behavioral studies)
Accessibly of Conversational Agents with Deaf or Blind Users
Using small focus groups, this work aims to understand the experiences, challenges, perceptions, and opportunities for the use of conversational agents (e.g Amazon Alexa and Siri) for users with visual or hearing impairments, with the goal of developing more accessible and inclusive systems.
Or, hard of hearing or deaf using cochlear implant or other aided hearing device
Currently 18 years of age or older
English language speakers
Non-English language speakers
Eye-hand coordination during upright stance
The study will determine how the brain controls eye and hand movements during quiet upright stance.
There will be one visit to the lab (approximately 2 hours) in which participants will be required to make reaching movements towards virtual targets while standing upright. Participants will be required to wear comfortable shoes.
$20
3)Participants will be right-hand dominant individuals
4)They will have normal or corrected-to-normal vision
5)Participants should be able to stand upright for long periods (up to 2 and a half hours) with rest every 5-10 minutes or as requested by the participant
6)Participants should be able to grasp a handle and move objects with both hands
Any history of musculoskeletal disorders (e.g., carpal tunnel syndrome)
Any history of cardiovascular disease (e.g., Coronary Artery disease, Peripheral Artery disease, Carotid Artery disease, Hypertension, Congenital Heart disease, Congestive Heart failure, Myocardial Infarction, Cardiac Arrythmias, Stroke).
Any history of conditions or diseases that increase risk for syncope (e.g., Anemia, Myocardial Ischemia, Kidney disease).
Any history of conditions or diseases of the vestibular system
Development of Lighting Application Efficacy Measurement Framework
This study seeks to analyze how subjects perceive brightness in a space. For this purpose, two separate studies will be conducted in a real setting in the Lighting Lab. In one experiment, subjects will be asked to judge the brightness of a task surface under different lighting conditions, which will be generated automatically, by assigning a value to the brightness level. In the other experiment, subjects will be asked to compare various automatically generated lighting conditions in side-by-side bays and adjust the lighting using a dial knob in one of the bays to match the light level in the other one in each condition.
having clear vision either with or without the use of eyeglasses/contact lenses
inability to distinguish certain shades of color
participants without glasses or contact lenses prescribed for their visual acuity
lacking clear vision
How do cues from the environment affect sound perception?
This study is about investigating how certain elements of urbanconfiguration affects people's subjective perception of noise in urbanenvironments.This section of the study assesses participants' subjective reactions tonoise intensity when the tree density changes in various spaces.
Gender: all
no visual or hearing impairments
Evaluating the consequences of mistimed light-emitting device use on cardiac activity and sleep health
The study is being done to find out whether wearing blue light-blocking glasses in the evening improves subsequent sleep. This is a 21-day study where participants will be asked to wear a sleep-monitoring “actiwatch”, an activity monitor, and a heart tracker, as well as to provide screenshots of their smartphone’s screen time app for three weeks. Participants will also be given the option to wear a blood pressure cuff on their arm for three days during the second half of each week, for a total of nine days.
Study participants will be asked to wear small devices on their wrist, hip, and shirt collar, and provide screenshots of their smartphone screen time app for three weeks. During the second and third weeks, participants will be asked to wear a pair of blue light-blocking glasses. Halfway through each week, participants will also be asked to wear a blood pressure monitor for 3 days/nights.There will be a total of seven in-person visits. At the first visit we will explain the study, ask interested participants to sign a consent form, collect information, and distribute study materials and devices. During all subsequent visits, participants will answer questionnaires and be provided additional study materials and devices.
150.00
Own an iOS smartphone (iPhone)
Willingness to update smartphone to access the current version of the Screen Time application
Willingness to participate in surveys, wear health monitoring devices, and provide screenshots of their smartphone’s screentime application throughout the entire study
Age 18 to 29 years old
Taking prescribed medications that affect sleep
Recent shift work
Sleep disorder diagnosis or any cardiovascular disease
Primarily use an Android smartphone
A PROSPECTIVE MULTICENTER STUDY TO ASSESS THE CLINICAL OUTCOMES OF CURRENT PHACOEMULSIFICATION APPROACH TO CATARACT EXTRACTION VERSUS THE MICOR SYSTEM DEVICE USING LOW ENERGY LENS EXTRACTION IN PATIENTS UNDERGOING CATARACT SURGERY
Research study to assess visual outcomes after cataract surgery between different devices. 2 trial groups open to males and females over the age of 18 who are to undergo cataract surgery.
There will be 3 in person visits per surgery eye.Vision will be checked at 2 of these visitsCataract surgery will be done at 1 of these visits
Must have a cataract that qualifies for surgery
Not Pregnant
Other eye conditions may not be allowed to participate, study coordinator will discuss further
Defining the role of slow eye movements on limb motor control
The purpose of the study is to examine how slow eye movements called smooth-pursuit eye movements, contribute to hand-eye coordination. Participants will grasp a robotic manipulandum and using the manipulandum interact with virtual visual stimuli in an augmented-reality environment.
Should have normal vision or corrected vision
Participants should be able to sit upright on a chair for upto 2 hours
Participants should be able to grasp and move objects with their right hand
Participants should be able to provide informed consent
History of musculoskeletal disorders (e.g., carpal tunnel syndrome, arthritis, fibromyalgia, tendinitis, trigger finger, mallet finger, fracture, or previous injury to the bones or joints in your neck, upper back, arms or hands in the last six months)
eye or vision problems (e.g., cataracts, glaucoma, a detached retina or macular degeneration)
Cognitive impairment such that informed consent cannot be obtained.
Medication that could make the participant either drowsy or tired. Individuals who get tired with 2 hours of mild to moderate exercise are also not eligible to participate.
The role of middle temporal and frontoparietal areas in limb motor control
The goal of this research is to understand the role of motion-processing areas on limb motor control. We will be using behavioral studies and combining that with functional brain imaging, EEG, and non-invasive brain stimulation using transcranial magnetic stimulation (TMS). TMS has been used in thousands of studies and is a very safe method to understand brain function for eye hand coordination.
There will be three visits. Participants will under go brain scanning. They will perform eye-hand coordination tasks by grabbing a robotic manipulandum. During the eye-hand coordination tasks, participants' brain activity will be measured using electroencephalography (EEG) and muscle activity using surface electromyography (EMG). Researchers will also apply transcranial magnetic stimulation (TMS) to temporarily inhibit and excite different brain areas. TMS is a noninvasive procedure that uses magnetic fields to stimulate nerve cells
50
Participants should be right-hand dominant individuals
Participants should be able to sit upright in a chair for long periods (up to 2 and a half hours) with rest
Participants should be able to grasp and move objects with both hands
Participants should be able to lie still and perform behavioral tasks inside a magnetic scanner for up to 60 minutes
Any history of musculoskeletal disorders (e.g., carpal tunnel syndrome, any form of arthritis, fibromyalgia, tendinitis, or previous injury or surgery to the bones or joints in your neck, upper back, arms or hands in the last six months)
Eye or vision problems (e.g., cataracts, glaucoma, a detached retina, or macular degeneration)
Individuals with metallic implants will be excluded from the study. The metallic implant will make participation in a magnetic scanner impossible
Medication that could make the participant drowsy or tired during the experiment
Characterizing the Visual Pathway in Epilepsy
This research is being done to determine whether the way your brain processes vision is involved in the epilepsy disease process. There has been recent evidence suggesting that epilepsy patients, compared to healthy controls, have thinner retinas, specifically a layer called the retinal nerve fiber layer, the inner most layer of the retina. This study will expand on that finding by investigating any differences in all of the retinal layers, as well as visual function, between epilepsy patients and healthy controls.
Patients only: Clinical diagnosis of epilepsy
All: Those who have diabetes
All: Those who have glaucoma
Investigating Face Processing Behavior and Neural Circuitry
The ability to recognize faces differs across people. We are studying this variability in behavior and in brain responses in young adults (ages 18-25 years) in the Lab of Developmental Neuroscience at Penn State. If eligible, you will do face recognition tasks on the computer and answer survey questions. You may also be asked to participate in another session in which we take pictures of your brain using MRI. Volunteers are paid $10/hr for time in the lab. Interested participants can start the screening processing by clicking on this confidential screening link here:https://pennstate.qualtrics.com/jfe/form/SV_9NPJ20bQAPd0VKZ
Native English speaker
Free of neurological and psychiatric disorders
Free of concussions with loss of consciousness
Remote testing for psychophysical studies of sensory perception and cognition
The purpose of this study is (1) to understand how the brain processes sensory information and (2) how this is affected by factors like blindness or synesthesia.
Participants will complete simple online tasks, for example judging differences in auditory pitch; processing visual and auditory stimuli in congruent and incongruent pairings; rating the sound-symbolic properties of either real words, pseudowords, or both; or discriminating between two stimuli on the basis of their structural properties over a change in their surface properties, and vice versa.
Amount varies depending on the study
Normal or corrected-to-normal vision
No other sensory deficits
Adults who experience synesthesia