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JOURNAL ARTICLE
Raina Vin, Nicholas M Blauch, David C Plaut, Marlene Behrmann
Although the Visual Word Form Area (VWFA) in left temporal cortex is considered the pre-eminent region in visual word processing, other regions are also implicated. We examined the entire text-selective circuit, using functional MRI. Ten regions of interest (ROIs) per hemisphere were defined, which, based on clustering, grouped into early vision, high-level vision, and language clusters. We analyzed the responses of the ROIs and clusters to words, inverted words, and consonant strings using univariate, multivariate, and functional connectivity measures...
February 16, 2024: IScience
#2
Isabel Bleimeister, Inbar Avni, Michael Granovetter, Gal Meiri, Michal Ilan, Analya Michaelovski, Idan Menashe, Marlene Behrmann, Ilan Dinstein
Recent neuroimaging and eye tracking studies have suggested that children with autism spectrum disorder (ASD) may exhibit more variable and idiosyncratic brain responses and eye movements than typically developing (TD) children. Here we extended this research for the first time to pupillometry recordings. We successfully completed pupillometry recordings with 103 children (66 with ASD), 4.5-years-old on average, who viewed three 90 second movies, twice. We extracted their pupillary time-course for each movie, capturing their stimulus evoked pupillary responses...
January 12, 2024: bioRxiv
#3
JOURNAL ARTICLE
Claire Simmons, Michael C Granovetter, Sophie Robert, Tina T Liu, Christina Patterson, Marlene Behrmann
The nature and extent of hemispheric lateralization and its potential for reorganization continues to be debated, although there is general agreement that there is a right hemisphere (RH) advantage for face processing in human adults. Here, we examined face processing and its lateralization in individuals with a single preserved occipitotemporal cortex (OTC), either in the RH or left hemisphere (LH), following early childhood resection for the management of drug-resistant epilepsy. The matched controls and those with a lesion outside of OTC evinced the standard superiority in processing upright over inverted faces and the reverse sensitivity to a nonface category (bicycles)...
January 6, 2024: Neuropsychologia
#4
JOURNAL ARTICLE
Noa Peskin, Marlene Behrmann, Shai Gabay, Yafit Gabay
Studies with individuals with developmental dyslexia (DD) have documented impaired perception of words and faces, both of which are domains of visual expertise for human adults. In this study, we examined a possible mechanism that might be associated with the impaired acquisition of visual expertise for words and faces in DD, namely, the atypical engagement of the monocular visual pathway. Participants with DD and typical readers (TR) judged whether a pair of sequentially presented unfamiliar faces or nonwords were the same or different, and the pair of stimuli were displayed in an eye-specific fashion using a stereoscope...
February 2024: Brain and Cognition
#5
JOURNAL ARTICLE
Vladislav Ayzenberg, Michael C Granovetter, Sophia Robert, Christina Patterson, Marlene Behrmann
Hemispherectomy is a surgical procedure in which an entire hemisphere of a patient's brain is resected or functionally disconnected to manage seizures in individuals with drug-resistant epilepsy. Despite the extensive loss of both ventral and dorsal visual pathways in one hemisphere, pediatric patients who have undergone hemispherectomy show a remarkably high degree of perceptual function across many domains. In the current study, we sought to understand the extent to which functions of the ventral and dorsal visual pathways reorganize to the contralateral hemisphere following childhood hemispherectomy...
November 10, 2023: Developmental Cognitive Neuroscience
#6
Michael C Granovetter, Anne Margarette S Maallo, Christina Patterson, Daniel Glen, Marlene Behrmann
Characterization of the postoperative structural integrity of cortex in adults who have undergone cortical resection surgery for the management of epilepsy has yielded mixed findings. In some cases, patients show persistent or accelerated cortical atrophy, while in others, atrophy decelerates or even reverses. Whether this variability applies as well to a paediatric population, for whom postoperative plasticity may be greater, remains to be determined. In this case-control study, high resolution structural T1 MRI data were acquired from 32 patients with childhood epilepsy surgery and 51 non-neurological matched controls...
September 25, 2023: bioRxiv
#7
Vladislav Ayzenberg, Michael C Granovetter, Sophia Robert, Christina Patterson, Marlene Behrmann
Hemispherectomy is a surgical procedure in which an entire hemisphere of a patient's brain is resected or functionally disconnected to manage seizures in individuals with drug-resistant epilepsy. Despite the extensive loss of input from both ventral and dorsal visual pathways of one hemisphere, pediatric patients who have undergone hemispherectomy show a remarkably high degree of perceptual function across many domains. In the current study, we sought to understand the extent to which functions of the ventral and dorsal visual pathways reorganize to the contralateral hemisphere following childhood hemispherectomy...
August 5, 2023: bioRxiv
#8
JOURNAL ARTICLE
Vladislav Ayzenberg, Claire Simmons, Marlene Behrmann
Despite their anatomical and functional distinctions, there is growing evidence that the dorsal and ventral visual pathways interact to support object recognition. However, the exact nature of these interactions remains poorly understood. Is the presence of identity-relevant object information in the dorsal pathway simply a byproduct of ventral input? Or, might the dorsal pathway be a source of input to the ventral pathway for object recognition? In the current study, we used high-density EEG-a technique with high temporal precision and spatial resolution sufficient to distinguish parietal and temporal lobes-to characterise the dynamics of dorsal and ventral pathways during object viewing...
2023: Cerebral cortex communications
#9
Ning Liu, Marlene Behrmann, Janita N Turchi, Galia Avidan, Fadila Hadj-Bouziane, Leslie G Ungerleider
No abstract text is available yet for this article.
November 24, 2022: Nature Communications
#10
JOURNAL ARTICLE
Ning Liu, Marlene Behrmann, Janita N Turchi, Galia Avidan, Fadila Hadj-Bouziane, Leslie G Ungerleider
Although the presence of face patches in primate inferotemporal (IT) cortex is well established, the functional and causal relationships among these patches remain elusive. In two monkeys, muscimol was infused sequentially into each patch or pair of patches to assess their respective influence on the remaining IT face network and the amygdala, as determined using fMRI. The results revealed that anterior face patches required input from middle face patches for their responses to both faces and objects, while the face selectivity in middle face patches arose, in part, from top-down input from anterior face patches...
November 9, 2022: Nature Communications
#11
JOURNAL ARTICLE
Michael C Granovetter, Sophia Robert, Leah Ettensohn, Marlene Behrmann
The right and left cerebral hemispheres are important for face and word recognition, respectively-a specialization that emerges over human development. The question is whether this bilateral distribution is necessary or whether a single hemisphere, be it left or right, can support both face and word recognition. Here, face and word recognition accuracy in patients (median age 16.7 y) with a single hemisphere following childhood hemispherectomy was compared against matched typical controls. In experiment 1, participants viewed stimuli in central vision...
November 2022: Proceedings of the National Academy of Sciences of the United States of America
#12
REVIEW
Vladislav Ayzenberg, Marlene Behrmann
A rich behavioral literature has shown that human object recognition is supported by a representation of shape that is tolerant to variations in an object's appearance. Such 'global' shape representations are achieved by describing objects via the spatial arrangement of their local features, or structure, rather than by the appearance of the features themselves. However, accumulating evidence suggests that the ventral visual pathway - the primary substrate underlying object recognition - may not represent global shape...
October 19, 2022: Trends in Cognitive Sciences
#13
JOURNAL ARTICLE
Sarah M Haigh, Laura Van Key, Pat Brosseau, Shaun M Eack, David I Leitman, Dean F Salisbury, Marlene Behrmann
Sensory abnormalities are characteristic of autism and schizophrenia. In autism, greater trial-to-trial variability (TTV) in sensory neural responses suggest that the system is more unstable. However, these findings have only been identified in the amplitude and not in the timing of neural responses, and have not been fully explored in schizophrenia. TTV in event-related potential amplitudes and inter-trial coherence (ITC) were assessed in the auditory mismatch negativity (MMN) in autism, schizophrenia, and controls...
October 7, 2022: Journal of Autism and Developmental Disorders
#14
JOURNAL ARTICLE
Sarah M Haigh, Pat Brosseau, Shaun M Eack, David I Leitman, Dean F Salisbury, Marlene Behrmann
Individuals with autism typically experience a range of symptoms, including abnormal sensory sensitivities. However, there are conflicting reports on the sensory profiles that characterize the sensory experience in autism that often depend on the type of stimulus. Here, we examine early auditory processing to simple changes in pitch and later auditory processing of more complex emotional utterances. We measured electroencephalography in 24 adults with autism and 28 controls. First, tones (1046.5Hz/C6, 1108...
2022: Frontiers in Psychiatry
#15
JOURNAL ARTICLE
Vladislav Ayzenberg, Marlene Behrmann
Although there is mounting evidence that input from the dorsal visual pathway is crucial for object processes in the ventral pathway, the specific functional contributions of dorsal cortex to these processes remain poorly understood. Here, we hypothesized that dorsal cortex computes the spatial relations among an object's parts - a processes crucial for forming global shape percepts - and transmits this information to the ventral pathway to support object categorization. Using fMRI with human participants (females and males), we discovered regions in the intraparietal sulcus (IPS) that were selectively involved in computing object-centered part relations...
May 3, 2022: Journal of Neuroscience
#16
JOURNAL ARTICLE
Zhiqiang Sha, Daan van Rooij, Evdokia Anagnostou, Celso Arango, Guillaume Auzias, Marlene Behrmann, Boris Bernhardt, Sven Bolte, Geraldo F Busatto, Sara Calderoni, Rosa Calvo, Eileen Daly, Christine Deruelle, Meiyu Duan, Fabio Luis Souza Duran, Sarah Durston, Christine Ecker, Stefan Ehrlich, Damien Fair, Jennifer Fedor, Jacqueline Fitzgerald, Dorothea L Floris, Barbara Franke, Christine M Freitag, Louise Gallagher, David C Glahn, Shlomi Haar, Liesbeth Hoekstra, Neda Jahanshad, Maria Jalbrzikowski, Joost Janssen, Joseph A King, Luisa Lazaro, Beatriz Luna, Jane McGrath, Sarah E Medland, Filippo Muratori, Declan G M Murphy, Janina Neufeld, Kirsten O'Hearn, Bob Oranje, Mara Parellada, Jose C Pariente, Merel C Postema, Karl Lundin Remnelius, Alessandra Retico, Pedro Gomes Penteado Rosa, Katya Rubia, Devon Shook, Kristiina Tammimies, Margot J Taylor, Michela Tosetti, Gregory L Wallace, Fengfeng Zhou, Paul M Thompson, Simon E Fisher, Jan K Buitelaar, Clyde Francks
Small average differences in the left-right asymmetry of cerebral cortical thickness have been reported in individuals with autism spectrum disorder (ASD) compared to typically developing controls, affecting widespread cortical regions. The possible impacts of these regional alterations in terms of structural network effects have not previously been characterized. Inter-regional morphological covariance analysis can capture network connectivity between different cortical areas at the macroscale level. Here, we used cortical thickness data from 1455 individuals with ASD and 1560 controls, across 43 independent datasets of the ENIGMA consortium's ASD Working Group, to assess hemispheric asymmetries of intra-individual structural covariance networks, using graph theory-based topological metrics...
April 2022: Molecular Psychiatry
#17
JOURNAL ARTICLE
Nicholas M Blauch, Marlene Behrmann, David C Plaut
Inferotemporal (IT) cortex in humans and other primates is topographically organized, containing multiple hierarchically organized areas selective for particular domains, such as faces and scenes. This organization is commonly viewed in terms of evolved domain-specific visual mechanisms. Here, we develop an alternative, domain-general and developmental account of IT cortical organization. The account is instantiated in interactive topographic networks (ITNs), a class of computational models in which a hierarchy of model IT areas, subject to biologically plausible connectivity-based constraints, learns high-level visual representations optimized for multiple domains...
January 18, 2022: Proceedings of the National Academy of Sciences of the United States of America
#18
Merel C Postema, Daan van Rooij, Evdokia Anagnostou, Celso Arango, Guillaume Auzias, Marlene Behrmann, Geraldo Busatto Filho, Sara Calderoni, Rosa Calvo, Eileen Daly, Christine Deruelle, Adriana Di Martino, Ilan Dinstein, Fabio Luis S Duran, Sarah Durston, Christine Ecker, Stefan Ehrlich, Damien Fair, Jennifer Fedor, Xin Feng, Jackie Fitzgerald, Dorothea L Floris, Christine M Freitag, Louise Gallagher, David C Glahn, Ilaria Gori, Shlomi Haar, Liesbeth Hoekstra, Neda Jahanshad, Maria Jalbrzikowski, Joost Janssen, Joseph A King, Xiang Zhen Kong, Luisa Lazaro, Jason P Lerch, Beatriz Luna, Mauricio M Martinho, Jane McGrath, Sarah E Medland, Filippo Muratori, Clodagh M Murphy, Declan G M Murphy, Kirsten O'Hearn, Bob Oranje, Mara Parellada, Olga Puig, Alessandra Retico, Pedro Rosa, Katya Rubia, Devon Shook, Margot J Taylor, Michela Tosetti, Gregory L Wallace, Fengfeng Zhou, Paul M Thompson, Simon E Fisher, Jan K Buitelaar, Clyde Francks
No abstract text is available yet for this article.
December 8, 2021: Nature Communications
#19
JOURNAL ARTICLE
Monika Jones, William B Harris, M Scott Perry, Marlene Behrmann, Joanna Christodoulou, Aria Fallah, Bryan Kolb, Frank Musiek, Lynn K Paul, Klajdi Puka, Cynthia Salorio, Raman Sankar, Mary Lou Smith, Ahsan Moosa Naduvil Valappil, Patricia Walshaw, Howard L Weiner, Raymond Woo, Phillip Zeitler, Taylor J Abel
For children with medication-resistant epilepsy who undergo multilobar or hemispheric surgery, the goal of achieving seizure freedom is met with a variety of potential functional consequences, both favorable and unfavorable. However, there is a paucity of literature that comprehensively addresses the cognitive, medical, behavioral, orthopedic, and sensory outcomes across the lifespan following large epilepsy surgeries in childhood, leaving all stakeholders underinformed with regard to counseling and expectations...
November 22, 2021: Epileptic Disorders: International Epilepsy Journal with Videotape
#20
JOURNAL ARTICLE
Yulia Lerner, Suzanne K Scherf, Mikhail Katkov, Uri Hasson, Marlene Behrmann
Despite our differences, there is much about the natural visual world that most observers perceive in common. Across adults, approximately 30% of the brain is activated in a consistent fashion while viewing naturalistic input. At what stage of development is this consistency of neural profile across individuals present? Here, we focused specifically on whether this mature profile is present in adolescence, a key developmental period that bridges childhood and adulthood, and in which new cognitive and social challenges are at play...
July 16, 2021: Journal of Cognitive Neuroscience
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