TITLE

Microstimulation to the Middle Temporal Area and its Effect on the Generation of Microsaccades

AUTHOR(S)
Riaz, Haider; Golzar, Ashkan
PUB. DATE
April 2014
SOURCE
McGill Science Undergraduate Research Journal;Apr2014, Vol. 9 Issue 1, p25
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
It has been repeatedly shown that neural activity in different brain structures can be correlated with perceptual and cognitive functions using electrical microstimulation. Currently, microstimulation is the only method that can demonstrate causal links between neural activity and specific cognitive functions. This study investigates the effects of microstimulation to the MT area of the visual cortex on the production of microsaccades for several seconds. Microsaccades are a type of fixational eye movement characterized by their quickness and low amplitude. The preliminary findings in this paper suggest that microstimulation to the MT area causes an increase in frequency and peak velocity of microsaccades. However, a more in-depth analysis to establish a correlation between the two was unsuccessful. These results suggest further investigation into the effects of microstimulation on microsaccades – using more sophisticated and reliable data collecting and analyzing techniques – is necessary.
ACCESSION #
97443402

 

Related Articles

  • The perceptual cognitive processes underpinning skilled performance in volleyball: Evidence from eye-movements and verbal reports of thinking involving an in situ representative task. Afonso, José; Garganta, Júlio; Mcrobert, Allistair; Williams, Andrew M.; Mesquita, Isabel // Journal of Sports Science & Medicine;Jun2012, Vol. 11 Issue 2, p339 

    An extensive body of work has focused on the processes underpinning perceptual-cognitive expertise. The majority of researchers have used film-based simulations to capture superior performance. We combined eye movement recording and verbal reports of thinking to explore the processes...

  • Remapping of the line motion illusion across eye movements. Melcher, David; Fracasso, Alessio // Experimental Brain Research;May2012, Vol. 218 Issue 4, p503 

    Although motion processing in the brain has been classically studied in terms of retinotopically defined receptive fields, recent evidence suggests that motion perception can occur in a spatiotopic reference frame. We investigated the underlying mechanisms of spatiotopic motion perception by...

  • Microsaccadic eye movements and firing of single cells in the striate cortex of macaque monkeys. Martinez-Conde, Susana; Macknik, Stephen L.; Hubel, David H. // Nature Neuroscience;Mar2000, Vol. 3 Issue 3, p251 

    When viewing a stationary object, we unconsciously make small, involuntary eye movements or 'microsaccades'. If displacements of the retinal image are prevented, the image quickly fades from perception. To understand how microsaccades sustain perception, we studied their relationship to the...

  • Transcranial magnetic stimulation of macaque frontal eye fields decreases saccadic reaction time. Gerits, Annelies; Ruff, Christian; Guipponi, Olivier; Wenderoth, Nicole; Driver, Jon; Vanduffel, Wim // Experimental Brain Research;Jul2011, Vol. 212 Issue 1, p143 

    Transcranial magnetic stimulation (TMS) is increasingly used to perturb targeted human brain sites non-invasively, to test for causal effects on performance of cognitive tasks. TMS might also be used in non-human primates to complement invasive work and compare with human studies. Here, we...

  • The effects of frontal eye field and dorsomedial frontal cortex lesions on visually guided eye movements. Schiller, Peter H.; Chou, I-han // Nature Neuroscience;Jul98, Vol. 1 Issue 3, p248 

    In the frontal lobe of primates, two areas play a role in visually guided eye movements: the frontal eye fields (FEF) and the medial eye fields (MEF) in dorsomedial frontal cortex. Previously, FEF lesions have revealed only mild deficits in saccadic eye movements that recovered rapidly. Deficits...

  • Changes in the P100 latency of the visual evoked potential and the saccadic reaction time during isometric contraction of the shoulder girdle elevators. Kunita, Kenji; Fujiwara, Katsuo // European Journal of Applied Physiology;Aug2004, Vol. 92 Issue 4/5, p421 

    We investigated changes in the P100 latency of the visual evoked potential (VEP) and the saccadic reaction time (SRT) in relation to the degree of activity of the shoulder girdle elevators. Muscle force was set in 10% increments from 0% to 50% of the maximal voluntary contraction (MVC). The VEP...

  • Predictive remapping of attention across eye movements. Rolfs, Martin; Jonikaitis, Donatas; Deubel, Heiner; Cavanagh, Patrick // Nature Neuroscience;Feb2011, Vol. 14 Issue 2, p252 

    Many cells in retinotopic brain areas increase their activity when saccades (rapid eye movements) are about to bring stimuli into their receptive fields. Although previous work has attempted to look at the functional correlates of such predictive remapping, no study has explicitly tested for...

  • Effects of alternating current stimulation on the healthy and diseased brain. Abd Hamid, Aini Ismafairus; Gall, Carolin; Speck, Oliver; Antal, Andrea; Sabel, Bernhard A. // Frontiers in Neuroscience;Oct2015, Vol. 9, p1 

    Cognitive and neurological dysfunctions can severely impact a patient's daily activities. In addition to medical treatment, non-invasive transcranial alternating current stimulation (tACS) has been proposed as a therapeutic technique to improve the functional state of the brain. Although during...

  • Why you look tired.  // Men's Health;Jul/Aug97, Vol. 12 Issue 6, p128 

    Discusses the relationship of eyes movement and brainpower. Effects of darting the eyes while working to brainpower; Explanation of Doctor Robert Abel of Thomas Jefferson University regarding the relationship of eyes to the brain.

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics