Contact

Fatemeh Molaei-Vaneghi

Address: Spemannstr. 41
72076 Tübingen
Room number: 3.A.02
Phone: +49 7071 601 1659
Fax: +49 7071 601 702
E-Mail: Fatemeh.Molaei-Vaneghi

 

Picture of Molaei-Vaneghi, Fatemeh

Fatemeh Molaei-Vaneghi

Position: PhD Student  Unit: Scheffler

Visual motion processing is fundamental for human vision. Recent research has particularly progressed in understanding high-level motion processing beyond human areas V5/MT and MST, in areas V3A, V6 and CSv. These regions appear to be sensitive to processing cues related to self- and object motion, and in integrating visual with non-visual motion cues, such as vestibular signals and eye-movements.


This multi-modal integration of visual motion signals with non-visual cues allows to differentiate between self-motion and external, objective, (or real) motion. Recently, a prominent involvement of areas V3A and V6 in encoding head-centered motion during pursuit eye movements was shown. V6 was suppressed by the retinal component of planar motion, and excited by objective planar motion. V3A lacked retinal responses to planar motion, and signaled exclusively objective planar motion. Another study suggested that MST, V3A and V6 contain different subsets of voxels responding to retinal motion or to objective motion, respectively.


Here we use ultra-high-field (9.4T) human fMRI in order to answer two questions: firstly, is there a differential involvement of cortical layers in the processing of retinal motion and of objective motion in high-level visual areas? Second: is there a columnar organisation segregating retinal and objective motion processing? A differential laminar response profile to the two motion types would provide important cues with regards to the hierarchy of processing involved in different areas, with modulation of upper, middle, or lower layers speaking for feedback, bottom-up or output sources of the different signals, respectively, which may differ across MST, V3A and V6 for different motion components. A columnar segregation would indicate specialized and segregated circuits within a given area. The project will provide entirely new insights into the functional organization of high-level visual motion processing areas of the human brain, and break new grounds in terms of laminar response analysis across multiple cortical regions. The results would open up numerous follow-up questions for future studies, including sub-cortical inputs sources, and connectivity studies.

Preferences: 
References per page: Year: Medium:

  
Show abstracts

Conference papers (4):

Shiman F, Molaei F, Abd Rashid R, Habil H and Ibrahim F (December-2012) Electro-acupuncture (EA) as an adjunct therapy to methadone maintenance treatment (MMT) in heroin addiction: A study of 2D EEG power spectral topography and Morlet wavelet, IEEE-EMBS Conference on Biomedical Engineering and Sciences (IECBES 2012), IEEE, Piscataway, NJ, USA, 922-926.
Molaei Vaneghi F, Oladazimi M, Shiman F, Kordi A, Safari MJ and Ibrahim F (February-2012) A Comparative Approach to ECG Feature Extraction Methods, Third International Conference on Intelligent Systems, Modelling and Simulation (ISMS 2012), IEEE, Piscataway, NJ, USA, 252-256.
Oladazimi M, Molaei Vaneghi F, Safari MJ, Asadi H and Aghay Kaboli SH (January-2012) A Review for Feature Extraction of EMG Signal Processing, 4th International Conference on Computer and Automation Engineering (ICCAE 2012), ASME Press, New York, NY, USA, 85-94.
Shiman F, Safavi SH, Vaneghi FM, Oladazimi M, Safari MJ and Ibrahim F (January-2012) EEG feature extraction using parametric and non-parametric models, IEEE-EMBS International Conference on Biomedical and Health Informatics (BHI 2012), IEEE, Piscataway, NJ, USA, 66-70.

Posters (1):

Molaei-Vaneghi F, Scheffler K and Bartels A (November-14-2016): A 9.4T human fMRI study reveals differential laminar responses for visual motion in eye- and world-centered reference frames in area V3A, 46th Annual Meeting of the Society for Neuroscience (Neuroscience 2016), San Diego, CA, USA.

Talks (1):

Molaei-Vaneghi F, Bause J, Ehses P, Scheffler K and Bartels A (June-1-2015) Abstract Talk: Encoding Self-Motion and External Motion during Pursuit Eye Movement, A Study at 9.4T, 23rd Annual Meeting and Exhibition of the International Society for Magnetic Resonance in Medicine (ISMRM 2015), Toronto, Canada(0139).

Export as:
BibTeX, XML, Pubman, Edoc, RTF
Last updated: Monday, 22.05.2017