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. For this purpose, separate studies will be conducted in a real setting in the Lighting Lab. In experiment one, subjects will be asked to judge the brightness of projected scenes on a wall two by two in comparison to one another. In experiment two, subjects will be asked to judge the brightness of scenes displayed on a monitor by comparing them to a reference scene, by assigning a value between 0 to 100 to the brightness level.
The experiment will take place in 302 Engineering Unit C. The participants will judge the brightness of displayed scenes on a monitor.
$20 for the current experiment
normal or corrected to normal visual acuity (participants need to have their prescription glasses or contact lenses on them during the experiments).
inability to distinguish certain shades of color
participants without glasses or contact lenses prescribed for their visual acuity
lacking clear visual acuity
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. 3 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
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
The role of ocular and limb motor inhibition for dexterous motor control
In this project, participants will perform experiments where they will be asked to look at salient virtual targets and make reaching movements to those targets, while ignoring other visual stimuli presented to them.
During this study, we will ask you to come to our laboratory located in 23 Recreation Building, Penn State University, on a single day.We will ask you to perform an eye-hand coordination task using a robot. You will sit in a modified chair and grasp a handle that permits you to move your hand leftward, rightward, towards and away from your body. A display system will project visual targets into the same plane as your hands, which will allow you to interact virtually with the visual targets. These targets will be either bright or dark and you will be instructed to look at some of these targets (while ignoring others) and make reaching movements to some of these targets.
20
Male and female participants who volunteer for the study and provide informed consent.
Participants will be right-hand dominant individuals.
They will have normal or corrected-to-normal vision.
Participants should be able to sit upright in a chair for long periods (up to 2 and a half hours) with rest.
Any history of musculoskeletal disorders
Eye or vision problem
Cognitive impairment such that informed consent cannot be obtained, or that participant would not be safe with the protocol.
Medication that could make the participant drowsy or tired during the experiment
Rapid Motor Regulation Mechanism for Arm Movement in Response to Visual Motion
This study looks at the relationship between motor control via. arm movement and visual stimuli. After participating in brief calibration protocol for the eye tracking system, participants will be moving a robotic handle to interact with visual stimuli during various tasks. Participants will spend approximately 2 hours in the lab.
There will be one approximately 2-hour visit. They will then be asked to complete 20-25 blocks of hand movements while looking at a moving virtual stimulus with a large visual background. Participants will receive regular breaks during the experiment.
$20
Right-hand dominant
Normal or corrected-to-normal vision
Able to sit upright in a chair for long periods
Able to grasp and move objects with both hands
Any history of musculoskeletal disorders
Eye or vision problems (e.g., cataracts, glaucoma, a detached retina or macular degeneration)
Cognitive impairment such that informed consent cannot be obtained, or that participant would not be safe with the protocol
Medication that could make the participant drowsy or tired during the experiment
Defining the role of slow eye movements on limb motor control in younger and older adults
The purpose of this study is to define how eye movements contribute to eye-hand coordination in individuals of the age group 18-50 (young adults) and 65-80 (older adults). Specifically, the aim of the study is to understand how slow eye movements affect arm and hand movements. All procedures to be used in our study will be non-invasive. The task during the study will be performed with a robotic handle that participants will grasp with their right hand. They will interact with visual stimuli by moving the robotic handle. The robotic environmentwill attempt to simulate real-world mechanical interactions, such as those experienced during catching a ball.
During this study, we will ask you to come to our laboratory located in 23 Recreation Building,Pennsylvania State University, on two days separated by a maximum of 48 hours. Both sessions will last approximately 90-120 minutes. During the first session, we will review the procedures with you and if you agree to participate, you will sign this form and then proceed to perform the study. You will perform about 20-25 blocks of hand movements. Each block will consist of 24-30 trials and each trial will last between 3-5 seconds.The second day will be identical to the first day but the order of trials within a block will be changed.
$10/hour
Participants will be right-hand dominant individuals.
They will have normal or corrected-to-normal vision.
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.
Any history of musculoskeletal disorders
Eye or vision problems (e.g., cataracts, glaucoma, a detached retina or macular degeneration).
Cognitive impairment
Medication that could make the participant drowsy or tired during the experiment.