scholarly journals Role of Occipital Cortex in the Perception of Depth-order from Motion: A Human fMRI Study

2012 ◽  
Vol 12 (9) ◽  
pp. 236-236
Author(s):  
J. Hegde ◽  
X. Chen
Keyword(s):  
Occipital Cortex ◽  
Depth Order ◽  
Fmri Study

The Role of Temporal Synchrony as a Binding Cue for Visual Persistence in Early Visual Areas: An fMRI Study

2009 ◽  
Vol 102 (6) ◽  
pp. 3461-3468 ◽  
Author(s):  
Yvonne J. Wong ◽  
Adrian J. Aldcroft ◽  
Mary-Ellen Large ◽  
Jody C. Culham ◽  
Tutis Vilis
Keyword(s):  
Visual Memory ◽  
Iconic Memory ◽  
Occipital Cortex ◽  
Independent Manner ◽  
Object Persistence ◽  
Motion Cues ◽  
Temporal Synchrony ◽  
Fmri Study ◽  
Visual Areas

We examined the role of temporal synchrony—the simultaneous appearance of visual features—in the perceptual and neural processes underlying object persistence. When a binding cue (such as color or motion) momentarily exposes an object from a background of similar elements, viewers remain aware of the object for several seconds before it perceptually fades into the background, a phenomenon known as object persistence. We showed that persistence from temporal stimulus synchrony, like that arising from motion and color, is associated with activation in the lateral occipital (LO) area, as measured by functional magnetic resonance imaging. We also compared the distribution of occipital cortex activity related to persistence to that of iconic visual memory. Although activation related to iconic memory was largely confined to LO, activation related to object persistence was present across V1 to LO, peaking in V3 and V4, regardless of the binding cue (temporal synchrony, motion, or color). Although persistence from motion cues was not associated with higher activation in the MT+ motion complex, persistence from color cues was associated with increased activation in V4. Taken together, these results demonstrate that although persistence is a form of visual memory, it relies on neural mechanisms different from those of iconic memory. That is, persistence not only activates LO in a cue-independent manner, it also recruits visual areas that may be necessary to maintain binding between object elements.

scholarly journals Automaticity and Reestablishment of Executive Control—An fMRI Study

2006 ◽  
Vol 18 (8) ◽  
pp. 1331-1342 ◽  
Author(s):  
Andrea Kübler ◽  
Veronica Dixon ◽  
Hugh Garavan
Keyword(s):  
Executive Control ◽  
Dorsolateral Prefrontal Cortex ◽  
Search Task ◽  
Visual Search Task ◽  
Cortical Activation ◽  
Automatic Behavior ◽  
Automatic Response ◽  
Fmri Study ◽  
Dorsolateral Prefrontal

The ability to exert control over automatic behavior is of particular importance as it allows us to interrupt our behavior when the automatic response is no longer adequate or even dangerous. However, despite the literature that exists on the effects of practice on brain activation, little is known about the neuroanatomy involved in reestablishing executive control over previously automatized behavior. We present a visual search task that enabled participants to automatize according to defined criteria within about 3 hr of practice and then required them to reassert control without changing the stimulus set. We found widespread cortical activation early in practice. Activation in all frontal areas and in the inferior parietal lobule decreased significantly with practice. Only selected prefrontal (Brodmann's areas [BAs] 9/46/8) and parietal areas (BAs 39/40) were specifically reactivated when executive control was required, underlining the crucial role of the dorsolateral prefrontal cortex in executive control to guide our behavior.

scholarly journals Latent Memory of Unattended Stimuli Reactivated by Practice: An fMRI Study on the Role of Consciousness and Attention in Learning

PLoS ONE ◽  
2014 ◽  
Vol 9 (3) ◽  
pp. e90098 ◽  
Author(s):  
Julia D. I. Meuwese ◽  
H. Steven Scholte ◽  
Victor A. F. Lamme
Keyword(s):  
Attention In Learning ◽  
Fmri Study

Role of anterior temporal cortex in auditory sentence comprehension: an fMRI study

Neuroreport ◽  
2001 ◽  
Vol 12 (8) ◽  
pp. 1749-1752 ◽  
Author(s):  
Colin Humphries ◽  
Kimberley Willard ◽  
Bradley Buchsbaum ◽  
Gregory Hickok
Keyword(s):  
Sentence Comprehension ◽  
Temporal Cortex ◽  
Fmri Study

scholarly journals The role of mid-insula in the relationship between cardiac interoceptive attention and anxiety: evidence from an fMRI study

2018 ◽  
Vol 8 (1) ◽  
Author(s):  
Yafei Tan ◽  
Dongtao Wei ◽  
Meng Zhang ◽  
Junyi Yang ◽  
Valentina Jelinčić ◽  
...  
Keyword(s):  
Fmri Study ◽  
The Relationship

The role of oxytocin in implicit personal space regulation: An fMRI study

2018 ◽  
Vol 91 ◽  
pp. 206-215 ◽  
Author(s):  
Daniela Cohen ◽  
Anat Perry ◽  
Naama Mayseless ◽  
Oded Kleinmintz ◽  
Simone G. Shamay-Tsoory
Keyword(s):  
Personal Space ◽  
Fmri Study

Role of left superior temporal gyrus during name recall process: An event-related fMRI study

NeuroImage ◽  
2008 ◽  
Vol 41 (3) ◽  
pp. 1142-1153 ◽  
Author(s):  
Sho Yagishita ◽  
Takamitsu Watanabe ◽  
Tomoki Asari ◽  
Hiroshi Ito ◽  
Motoichiro Kato ◽  
...  
Keyword(s):  
Superior Temporal Gyrus ◽  
Fmri Study

Intrinsic functional organization of retinotopic visual fields in human occipital cortex: A 3T fMRI study

NeuroImage ◽  
2009 ◽  
Vol 47 ◽  
pp. S63
Author(s):  
VG van de Ven ◽  
B Jans ◽  
M Been ◽  
R Goebel ◽  
P de Weerd
Keyword(s):  
Functional Organization ◽  
Visual Fields ◽  
Occipital Cortex ◽  
Fmri Study

scholarly journals From Phonemes to Articulatory Codes: An fMRI Study of the Role of Broca's Area in Speech Production

2009 ◽  
Vol 19 (9) ◽  
pp. 2156-2165 ◽  
Author(s):  
Marina Papoutsi ◽  
Jacco A. de Zwart ◽  
J. Martijn Jansma ◽  
Martin J. Pickering ◽  
James A. Bednar ◽  
...  
Keyword(s):  
Speech Production ◽  
Broca’S Area ◽  
Broca's Area ◽  
Fmri Study
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