Projects
Name
Analysis Of Lateral Interactions In The Visual System Using Electrophysiological And Neuropsychological Approaches
University
Brazil (IFMSA-Brazil) - Centro Universitario do Para, Belem
Domain
Physiology
Departement
Centro Universitario Do Estado Do Para, Av. Almirante Barroso, 3775, Belem, Para, Brazil.
Head
Milena Coelho Fernandes Caldato
Tutor
Claudio Eduardo Correa Teixeira
Languages
English, Portuguese.
Duration
4 weeks
Availability
Cities/Months Jan Feb Mar Apr May Jun Jul Augt Sep Oct Nov Dec
No No No No No No No Yes Yes Yes Yes No
Type of Research Project
- Basic science
What is the background of the project?
Its surround can alter the perception of a central stimulus property. Several psychophysical studies have described this effect on the perception of brightness, color, motion, perceived synchrony, and spatiotemporal signals. In addition, many physiological studies have searched for the neural basis of the center-surround interactions involved in the mentioned perceptual effects. AIM: In this context, the aim of this project is to understand the neural basis of lateral interactions involved in the perception of temporal flicker using neurophysiological and neuropsychological approaches to measure such interactions at ipsilateral and contralateral hemispheres. USED TECHNIQUES: This research uses computational stimuli to record visual-evoked potentials using Electroencephalography (EEG) and measure perceptual responses to similar stimulus using psychophysical methods.
What is the aim of the project?
In this context, the aim of this project is understand the neural basis of lateral interactions involved in the perception of temporal flicker using neurophysiological and neuropsychological approaches to measure such interactions at ipsilateral and contralateral hemispheres.
What techniques and methods are used?
We use computational stimuli to record visual-evoked potentials using EEG and measure perceptual responses to similar stimulus using psychophysical methods.
What is the role of the student?
- The student will observe the practical experiments but will be highly involved in the analysis of the results
- If the project includes “lab work”
- the student will take active part in the practical aspect of the project
- The tasks will be done under supervision
What are the tasks expected to be accomplished by the student?
As mentioned above, students will receive hands on training in electrophysiological and neuropsychological approaches, which involve knowledge about how visual neural system works and how these methods can be used to detect neurological impairments and follow up patients condition along recovery and/or treatment.
Will there be any theoretical teaching provided (preliminary readings, lectures, courses, seminars etc)
All students enrolled will be trained in the scope of the methodology involved and will have to attend to lectures and give seminars.
What is expected from the student at the end of the research exchange? What will be the general outcome of the student?
- The student will prepare a scientific report
- The student will prepare an abstract
What skills are required of the student? Is there any special knowledge or a certain level of studies needed?
No special requirements are needed, except willing to learn and commitment with work.
Are there any legal limitations in the student’s involvement
No
Hours
6
Type of students accepted
This project accepts:
- Medical students
Articles
- For the use of students considering participating in the project; further information can be found from the following Teixeira CE; Salomao RC; Rodrigues AR; Horn FK; Silveira LC; Kremers J. Evidence for two types of lateral interactions in visual perception of temporal signals. J Vis. 2014 Aug 13;14(9). pii: 10. doi: 10.1167/14.9.10.
- Teixeira; Claudio E. C.; Silveira; Luiz Carlos L.; & Kremers; Jan. (2011). Lateral interactions in visual perception of temporal signals: cortical and subcortical components. Psychology & Neuroscience; 4(1); 57-65. https://dx.doi.org/10.3922/j.psns.2011.1.007.
- Kozyrev V; Silveira LC; Kremers J. Linking lateral interactions in flicker perception to lateral geniculate nucleus cell responses. J Physiol. 2007 Jun 15;581(Pt 3):1083-100. doi: 10.1113/jphysiol.2007.129486
- Kremers J; Rimmele U. The spatial extent of lateral interactions in flicker perception. Vision Res. 2007 Jan;47(1):16-21. http://dx.doi.org/10.1016/j.visres.2006.08.035