Search Results Within Category "Vision & Eyes"
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 environment will 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.
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
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
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 visits Cataract 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
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
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)
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.
How do cues from the environment affect sound perception?
This study is about investigating how certain elements of urban configuration affects people's subjective perception of noise in urban environments. This section of the study assesses participants' subjective reactions to noise intensity when the tree density changes in various spaces.
Gender: all
no visual or hearing impairments
Motion in action: Integrating multisensory inputs for posture stabilization and complex action acquisition
This study looks at how people use their eyes and body to interact with moving objects while standing up. Participants will stand at a robotic device and try to stop virtual objects moving at different speeds on a screen, similar to catching or blocking a ball. The research will help us understand how the brain coordinates sensory information to maintain balance.
Participants will be required to stand and interact with virtual objects by grasping a robotic manipulandum. A session will last approximately 120 minutes.
$30 per session
Right-hand dominant
Normal or corrected-to-normal vision (20/20)
Able to stand for up to 2 hours
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
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
Neural mechanisms of manual interception
How does the brain decide to reach one way or the other? This study will examine how movement decisions are coordinated by neural mechanisms in the brain during manual interception and reaching actions.
Participants will be required to complete a simple virtual interception task with a handle. Participants will be screened and sign informed consent upon entry of the lab. They will then be fitted with EMG sensors and an eye-tracking reference sticker. They will be seated for this task. The task requires a participant to hold their hand steady at the epicenter of a circle, and reach as quickly and accurately as possible to one of 2 moving targets that will appear.
$20
Right-handed
18-50 years old
Corrected to normal or normal vision
Ability to grasp objects like handle with right hand
Any history of musculoskeletal disorders
Any history of cardiovascular disease
Any increased risk for syncope
Any history of conditions or diseases of the eyes or vision
Neural and Sensorimotor Mechanisms of Visuomotor Actions: Linking Brain Activity, Muscle Coordination, and Visual Attention
This study explores how the brain, eyes, and muscles work together when people use their hands to track or catch moving objects. Participants will sit and use their right hand on a tablet to follow a moving virtual ball while wearing non-invasive sensors that record brain waves (EEG), muscle activity (EMG), and eye movements. The goal is to understand how the body prepares for and responds to motion using vision and movement control. The findings may help scientists improve therapies and technologies for people with movement difficulties, such as after a stroke or brain injury.
Participants will attend one in-person session lasting approximately 2 hours. During the session, they will wear an EEG cap, EMG sensors, and an eye tracker while completing a hand-tracking task using their right hand on a tablet.
20
Right-handed
Normal or corrected-to-normal vision
No history of neurological, psychiatric, or motor disorders
Able to sit comfortably for up to 2 hours
Presence of metal implants in the head (excluding dental fillings)
Skin sensitivity or allergies to adhesives or EEG gel
Use of medications that affect the nervous system