scholarly journals Cortical Regions Encoding Hardness Perception Modulated by Visual Information Identified by Functional Magnetic Resonance Imaging With Multivoxel Pattern Analysis

2019 ◽  
Vol 13 ◽  
Author(s):  
Yuri Kim ◽  
Nobuo Usui ◽  
Atsushi Miyazaki ◽  
Tomoki Haji ◽  
Kenji Matsumoto ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Visual Information ◽  
Pattern Analysis ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Multivoxel Pattern Analysis ◽  
Cortical Regions

scholarly journals A functional magnetic resonance imaging investigation of the autonomous sensory meridian response

PeerJ ◽  
2019 ◽  
Vol 7 ◽  
pp. e7122 ◽  
Author(s):  
Stephen D. Smith ◽  
Beverley K. Fredborg ◽  
Jennifer Kornelsen
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Matched Control ◽  
Emotional Experience ◽  
Affective State ◽  
Cingulate Gyrus ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Cortical Regions

Background Autonomous Sensory Meridian Response (ASMR) is a sensory-emotional experience in which specific stimuli (ASMR “triggers”) elicit tingling sensations on the scalp, neck, and shoulders; these sensations are accompanied by a positive affective state. In the current research, functional magnetic resonance imaging (fMRI) was used in order to delineate the neural substrates of these responses. Methods A total of 17 individuals with ASMR and 17 age- and sex-matched control participants underwent fMRI scanning while watching six 4-minute videos. Three of the videos were designed to elicit ASMR tingling and three videos were not. Results The results demonstrated that ASMR videos have a distinct effect on the neural activity of individuals with ASMR. The contrast of ASMR participants’ responses to ASMR videos showed greater activity in the cingulate gyrus as well as in cortical regions related to audition, movement, and vision. This activity was not observed in control participants. The contrast of ASMR and control participants’ responses to ASMR-eliciting videos detected greater activity in right cingulate gyrus, right paracentral lobule, and bilateral thalamus in ASMR participants; control participants showed greater activity in the lingula and culmen of the cerebellum. Conclusions Together, these results highlight the fact that ASMR videos elicit activity in brain areas related to sensation, emotion, and attention in individuals with ASMR, but not in matched control participants.

scholarly journals Brain Function Early after Stroke in Relation to Subsequent Recovery

2004 ◽  
Vol 24 (7) ◽  
pp. 756-763 ◽  
Author(s):  
Hoang Nhan ◽  
Kristin Barquist ◽  
Kathleen Bell ◽  
Peter Esselman ◽  
Ib R. Odderson ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Functional Magnetic Resonance Imaging ◽  
Cortical Activation ◽  
Functional Magnetic Resonance ◽  
Resonance Imaging ◽  
Sensory Cortices ◽  
Cortical Regions ◽  
Time Specific ◽  
Over Time

This study aimed to characterize brain activation and perfusion early after stroke within cortical regions that would later change activation during recovery. Patients were studied serially after stroke (mean t1, = 16 days after stroke, t2 = 3.5 months later) using perfusion-weighted imaging and functional magnetic resonance imaging during finger movement. Controls (n = 7) showed no significant change in regional activation volumes over time. Among stroke patients (n = 8), however, recovery was accompanied by several patterns of functional magnetic resonance imaging change, with increased activation volumes over time in five patients and decreased in two. Most regions increasing activation over time were in the stroke hemisphere. Of the five patients showing increased activation over time, specific activation foci enlarged at t2 were already activated at t1 in four patients, and at least one focus growing from t1 to t2 was in a different arterial distribution from the infarct in all five patients. Perfusion of sensorimotor cortex at t1 was generally not reduced in the stroke hemisphere (94% of noninfarcted hemisphere). Improved clinical outcome was related to increased activation within sensory cortices of both brain sides, including bilateral secondary somatosensory areas. Early after stroke, cortical activation that will later increase in parallel with recovery is often already identifiable, can be remote from the vascular territory of the infarct, and is not likely hindered by reduced perfusion. The findings may be useful for restorative interventions introduced during the weeks after a stroke.

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