The ventral attention network: the mirror of the language network in the right brain hemisphere

2020 ◽  
Vol 237 (4) ◽  
pp. 632-642
Author(s):  
Florian Bernard ◽  
Jean‐Michel Lemee ◽  
Edouard Mazerand ◽  
Louis‐Marie Leiber ◽  
Philippe Menei ◽  
...  
Keyword(s):  
Attention Network ◽  
Brain Hemisphere ◽  
Right Brain ◽  
The Right ◽  
Language Network

Orientation and lateralized cue use in pigeons navigating a large indoor environment

2002 ◽  
Vol 205 (12) ◽  
pp. 1795-1805 ◽  
Author(s):  
Helmut Prior ◽  
Frank Lingenauber ◽  
Jörg Nitschke ◽  
Onur Güntürkün
Keyword(s):  
Reference Frame ◽  
Brain Lateralization ◽  
Spatial Cues ◽  
Brain Hemisphere ◽  
Brain Hemispheres ◽  
Left Brain ◽  
Right Brain ◽  
Starting Location ◽  
The Right ◽  
Global Reference Frame

SUMMARY The pigeon's use of different visuo-spatial cues was studied under controlled laboratory conditions that simulated analogous aspects of a homing situation. The birds first learned the route to a goal that was not visible from the starting location, but became visible as it was approached. Birds could orientate within a mainly geometric global reference frame, using prominent landmarks within their range, or by `piloting' along local cues. After learning the route, the birds were tested from familiar and unfamiliar release points, and several aspects of the available cues were varied systematically. The study explored the contribution of the left and right brain hemispheres by performing tests with the right or left eye occluded. The results show that pigeons can establish accurate bearings towards a non-visible goal by using a global reference frame only. Furthermore, there was a peak of searching activity at the location predicted by the global reference frame. Search at this location and directedness of the bearings were equally high with both right and left eye, suggesting that both brain hemispheres have the same competence level for these components of the task. A lateralization effect occurred when prominent landmarks were removed or translated. While the right brain hemisphere completely ignored such changes,the left brain hemisphere was distracted by removal of landmarks. After translation of landmarks, the left but not the right brain hemisphere allocated part of the searching activity to the site predicted by the new landmark position. The results show that a mainly geometric global visual reference frame is sufficient to determine exact bearings from familiar and unfamiliar release points. Overall, the results suggest a model of brain lateralization with a well-developed global spatial reference system in either hemisphere and an extra capacity for the processing of object features in the left brain.

scholarly journals Structural Brain Abnormalities in Homicidal Patient: Forensic Case Report

2009 ◽  
Vol 24 (S1) ◽  
pp. 1-1
Author(s):  
S. Radeljak ◽  
T. Žarkovic-Palijan ◽  
M. Kovač ◽  
D. Kovačević
Keyword(s):  
Prefrontal Cortex ◽  
Clinical Case ◽  
Temporal Cortex ◽  
Brain Abnormalities ◽  
Antipsychotic Therapy ◽  
Brain Hemisphere ◽  
Right Brain ◽  
Arachnoidal Cyst ◽  
The Right ◽  
Structural Brain

Background:Studies have revealed that areas associated with violent behaviour are located in the prefrontal cortex, medial temporal regions and limbic regions. Key regions commonly found to be impaired in population of violent homicide offenders include prefrontal cortex, temporal gyrus, amygdala-hippocampal complex, and anterior cingulate cortex. Recent findings have confirmed link between large arachnoid cysts and psychotic symptoms. There is no scientific data in literature on the case of homicidal forensic patient with large arachnoidal cyst and lesion of frontal and temporal brain regions.Clinical presentation:We present the first forensic clinical case of male homicidal patient, age 29, with arachnoidal cyst (Galassi III) occupying large portion of the right brain hemisphere. The patient is presented with acute psychotic behavior after he killed his father and was escorted to our department for psychiatric evaluation. The patient was catatonic upon admission to the hospital and completely non-cooperative (mute). After interviewing patient's family members we have collected data regarding visible changes in his behaviour in the last two years accompanied with frequent attacks of headache. MRI study revealed large arachnoid cyst in the right brain hemisphere compressing right frontal and temporal cortex with lesions in frontal and temporal cortex and lesion of the white brain matter in insular region of both hemispheres. The patient was ordered antipsychotic therapy (clozapin) and schedulled for further psychiatric observation.Conclusion:This clinical case represents highly probable link between structural brain changes and homicidal forensic patient. We have shown multiple structural brain abnormalities supporting neuroscientific hypothesis that impulsive homicide offenders lack the prefrontal “inhibitory” machinery.

scholarly journals How to engage the right brain hemisphere in aphasics without even singing: evidence for two paths of speech recovery

2013 ◽  
Vol 7 ◽  
Author(s):  
Benjamin Stahl ◽  
Ilona Henseler ◽  
Robert Turner ◽  
Stefan Geyer ◽  
Sonja A. Kotz
Keyword(s):  
Brain Hemisphere ◽  
Right Brain ◽  
The Right

scholarly journals Lateralization of magnetic compass orientation in pigeons

2010 ◽  
Vol 7 (suppl_2) ◽  
Author(s):  
Christiane Wilzeck ◽  
Wolfgang Wiltschko ◽  
Onur Güntürkün ◽  
Roswitha Wiltschko ◽  
Helmut Prior
Keyword(s):  
Operant Chamber ◽  
Magnetic Compass ◽  
Compass Orientation ◽  
Brain Hemisphere ◽  
Brain Hemispheres ◽  
Left Brain ◽  
Right Brain ◽  
Magnetic Compass Orientation ◽  
Operant Task ◽  
The Right

The aim of our study was to test for lateralization of magnetic compass orientation in pigeons. Having shown that pigeons are capable of learning magnetic compass directions in an operant task, we wanted to know whether the brain hemispheres contribute differently and how the lateralization pattern relates to findings in other avian species. Birds that had learnt to locate food in an operant chamber by means of magnetic directions were tested for lateralization of magnetic compass orientation by temporarily covering one eye. Successful orientation occurred under all conditions of viewing. Thus, pigeons can perceive and process magnetic compass directions with the right eye and left brain hemisphere as well as the left eye and right brain hemisphere. However, while the right brain hemisphere tended to confuse the learned direction with its opposite (axial response), the left brain hemisphere specifically preferred the correct direction. Our findings demonstrate bilateral processing of magnetic information, but also suggest qualitative differences in how the left and the right brain deal with magnetic cues.

scholarly journals The right brain hemisphere is dominant in human infants

Brain ◽  
1997 ◽  
Vol 120 (6) ◽  
pp. 1057-1065 ◽  
Author(s):  
C Chiron
Keyword(s):  
Human Infants ◽  
Brain Hemisphere ◽  
Right Brain ◽  
The Right

scholarly journals Experience of The Rehabilitation for Sign Language Aphasia due to The Damage of The Right Brain in A Left-handed Deaf Japanese Signer

2020 ◽  
Vol 40 (3) ◽  
pp. 393-398
Author(s):  
Miwa Honda ◽  
Yoshihiro Kushihashi ◽  
Hirokazu Kawano ◽  
Masako Hayashida ◽  
Megumi Shimodozono
Keyword(s):  
Sign Language ◽  
Left Handed ◽  
Right Brain ◽  
The Right

Dysregulation of the Right Brain: A Fundamental Mechanism of Traumatic Attachment and the Psychopathogenesis of Posttraumatic Stress Disorder

2002 ◽  
Vol 36 (1) ◽  
pp. 9-30 ◽  
Author(s):  
Allan N Schore
Keyword(s):  
Posttraumatic Stress Disorder ◽  
Posttraumatic Stress ◽  
Stress Disorder ◽  
Developmental Trajectory ◽  
Stress Disorders ◽  
Developmental Stress ◽  
Posttraumatic Stress Disorders ◽  
Autonomic Nervous ◽  
Right Brain ◽  
The Right

Objective: This review integrates recent advances in attachment theory, affective neuroscience, developmental stress research, and infant psychiatry in order to delineate the developmental precursors of posttraumatic stress disorder. Method: Existing attachment, stress physiology, trauma, and neuroscience literatures were collected using Index Medicus/Medline and Psychological Abstracts. This converging interdisciplinary data was used as a theoretical base for modelling the effects of early relational trauma on the developing central and autonomic nervous system activities that drive attachment functions. Results: Current trends that integrate neuropsychiatry, infant psychiatry, and clinical psychiatry are generating more powerful models of the early genesis of a predisposition to psychiatric disorders, including PTSD. Data are presented which suggest that traumatic attachments, expressed in episodes of hyperarousal and dissociation, are imprinted into the developing limbic and autonomic nervous systems of the early maturing right brain. These enduring structural changes lead to the inefficient stress coping mechanisms that lie at the core of infant, child, and adult posttraumatic stress disorders. Conclusions: Disorganised-disoriented insecure attachment, a pattern common in infants abused in the first 2 years of life, is psychologically manifest as an inability to generate a coherent strategy for coping with relational stress. Early abuse negatively impacts the developmental trajectory of the right brain, dominant for attachment, affect regulation, and stress modulation, thereby setting a template for the coping deficits of both mind and body that characterise PTSD symptomatology. These data suggest that early intervention programs can significantly alter the intergenerational transmission of posttraumatic stress disorders.

Drawing on the right brain for aphasia recovery

Neurology ◽  
2016 ◽  
Vol 86 (17) ◽  
pp. 1566-1567 ◽  
Author(s):  
A.M. Barrett ◽  
Roy H. Hamilton
Keyword(s):  
Right Brain ◽  
The Right ◽  
Aphasia Recovery
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