scholarly journals Role of the Insula and Vestibular System in Patients with Chronic Subjective Dizziness: An fMRI Study Using Sound-Evoked Vestibular Stimulation

2015 ◽  
Vol 9 ◽  
Author(s):  
Iole Indovina ◽  
Roberta Riccelli ◽  
Giuseppe Chiarella ◽  
Claudio Petrolo ◽  
Antonio Augimeri ◽  
...  
Keyword(s):  
Vestibular System ◽  
Vestibular Stimulation ◽  
Fmri Study

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

The effects of stochastic monopolar galvanic vestibular stimulation on human postural sway

2003 ◽  
Vol 12 (2-3) ◽  
pp. 77-85
Author(s):  
Anthony P. Scinicariello ◽  
J. Timothy Inglis ◽  
J.J. Collins
Keyword(s):  
Vestibular System ◽  
Postural Sway ◽  
Center Of Pressure ◽  
Vestibular Stimulation ◽  
Galvanic Vestibular Stimulation ◽  
Lower Sensitivity ◽  
Input Stimulus ◽  
Vestibular Perception ◽  
Afferent Nerve Endings ◽  
Young Subjects

Galvanic vestibular stimulation (GVS) is a technique in which small currents are delivered transcutaneously to the afferent nerve endings of the vestibular system through electrodes placed over the mastoid bones. The applied current alters the firing rates of the peripheral vestibular afferents, causing a shift in a standing subject's vestibular perception and a corresponding postural sway. Previously, we showed that in subjects who are facing forward, stochastic bipolar binaural GVS leads to coherent stochastic mediolateral postural sway. The goal of this pilot study was to extend that work and to test the hypothesis that in subjects who are facing forward, stochastic monopolar binaural GVS leads to coherent stochastic anteroposterior postural sway. Stochastic monopolar binaural GVS was applied to ten healthy young subjects. Twenty-four trials, each containing a different galvanic input stimulus from among eight different frequency ranges, were conducted on each subject. Postural sway was evaluated through analysis of the center-of-pressure (COP) displacements under each subject's feet. Spectral analysis was performed on the galvanic stimuli and the COP displacement time series to calculate the coherence spectra. Significant coherence was found between the galvanic input signal and the anteroposterior COP displacement in some of the trials (i.e., at least one) in nine of the ten subjects. In general, the coherence values were highest for the mid-range frequencies that were tested, and lowest for the low- and high-range frequencies. However, the coherence values we obtained were lower than those we previously reported for stochastic bipolar binaural GVS and mediolateral sway. These differences may be due to fundamental characteristics of the vestibular system such as lower sensitivity to symmetric changes in afferent firing dynamics, and/or differences between the biomechanics of anteroposterior and mediolateral sway.

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

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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