Functional neuroanatomy of visual object naming: a PET study

1996 ◽  
Vol 234 (2) ◽  
pp. 110-115 ◽  
Author(s):  
Motohiro Kiyosawa ◽  
Chihiro Inoue ◽  
Tsutomu Kawasaki ◽  
Takashi Tokoro ◽  
Kenji Ishii ◽  
...  
Keyword(s):  
Visual Object ◽  
Object Naming ◽  
Functional Neuroanatomy ◽  
Visual Object Naming

scholarly journals Time-Varying Effective Connectivity during Visual Object Naming as a Function of Semantic Demands

2015 ◽  
Vol 35 (23) ◽  
pp. 8768-8776 ◽  
Author(s):  
C. Poch ◽  
M. I. Garrido ◽  
J. M. Igoa ◽  
M. Belinchon ◽  
I. Garcia-Morales ◽  
...  
Keyword(s):  
Effective Connectivity ◽  
Visual Object ◽  
Object Naming ◽  
Time Varying ◽  
Visual Object Naming

scholarly journals Shared space, separate processes: Neural activation patterns for auditory description and visual object naming in healthy adults

2013 ◽  
Vol 35 (6) ◽  
pp. 2507-2520 ◽  
Author(s):  
Marla J. Hamberger ◽  
Christian G. Habeck ◽  
Spiro P. Pantazatos ◽  
Alicia C. Williams ◽  
Joy Hirsch
Keyword(s):  
Healthy Adults ◽  
Visual Object ◽  
Object Naming ◽  
Neural Activation ◽  
Activation Patterns ◽  
Shared Space ◽  
Visual Object Naming

Visual object naming in patients with small lesions centered at the left temporopolar region

2014 ◽  
Vol 221 (1) ◽  
pp. 473-485 ◽  
Author(s):  
Pablo Campo ◽  
Claudia Poch ◽  
Rafael Toledano ◽  
José Manuel Igoa ◽  
Mercedes Belinchón ◽  
...  
Keyword(s):  
Visual Object ◽  
Object Naming ◽  
Visual Object Naming

A visual object naming task standardized for the Croatian language: A tool for research and clinical practice

2013 ◽  
Vol 45 (4) ◽  
pp. 1144-1158 ◽  
Author(s):  
Maja Rogić ◽  
Ana Jerončić ◽  
Marija Bošnjak ◽  
Ana Sedlar ◽  
Darko Hren ◽  
...  
Keyword(s):  
Clinical Practice ◽  
Naming Task ◽  
Visual Object ◽  
Object Naming ◽  
Visual Object Naming

scholarly journals Perseverative and Semantic Influences on Visual Object Naming Errors in Optic Aphasia: A Connectionist Account

1993 ◽  
Vol 5 (1) ◽  
pp. 89-117 ◽  
Author(s):  
David C. Plaut ◽  
Tim Shallice
Keyword(s):  
Visual Information ◽  
Semantic Processing ◽  
Visual Object ◽  
Object Naming ◽  
Neurological Damage ◽  
Short Term ◽  
Small Set ◽  
Deep Dyslexia ◽  
Visual Object Naming ◽  
Processing Of Visual Information

Although perseveration—the inappropriate repetition of previous responses—is quite common among patients with neurological damage, relatively few detailed computational accounts of its various forms have been put forth. A particularly well-documented variety involves the pattern of errors made by “optic aphasic” patients, who have a selective deficit in naming visually presented objects. Based on our previous work in modeling impaired reading via meaning in deep dyslexia, we develop a connectionist simulation of visual object naming. The major extension in the present work is the incorporation of short-term correlational weights that bias the network towards reproducing patterns of activity that have occurred on recently preceding trials. Under damage, the network replicates the complex semantic and perseverative effects found in the optic aphasic error pattern. Further analysis reveals that the perseverative effects are strongest when the lesions are near or within semantics, and are relatively mild when the preceding object evokes no response. Like optic aphasics, the network produces predominantly semantic rather than visual errors because, in contrast to reading, there is some structure in the mapping from visual to semantic representations for objects. Viewed together with the dyslexia simulations, the replication of complex empirical phenomena concerning impaired visual comprehension based on a small set of general connectionist principles strongly suggests that these principles provide important insights into the nature of semantic processing of visual information and its breakdown following brain damage.

High frequency gamma activity in the left hippocampus predicts visual object naming performance

2014 ◽  
Vol 135 ◽  
pp. 104-114 ◽  
Author(s):  
Carlos M. Hamamé ◽  
F.-Xavier Alario ◽  
Anais Llorens ◽  
Catherine Liégeois-Chauvel ◽  
Agnés Trébuchon-Da Fonseca
Keyword(s):  
High Frequency ◽  
Gamma Activity ◽  
Visual Object ◽  
Object Naming ◽  
Left Hippocampus ◽  
Visual Object Naming ◽  
Naming Performance

Conduction Aphasia with Intact Visual Object Naming

2014 ◽  
Vol 27 (2) ◽  
pp. 96-101 ◽  
Author(s):  
Ajay Kumar Pandey ◽  
Kenneth M. Heilman
Keyword(s):  
Visual Object ◽  
Object Naming ◽  
Conduction Aphasia ◽  
Visual Object Naming

scholarly journals Functional Dissociation between Cognitive Estimation and Object Naming in Focal Temporal and Frontal Lobe Epilepsies

2018 ◽  
Vol 05 (01) ◽  
pp. 044-049
Author(s):  
Isabella Braun ◽  
Michael Schwarz ◽  
Katrin Walther ◽  
Mark Stemmler ◽  
Burkhard Kasper ◽  
...  
Keyword(s):  
Frontal Lobe ◽  
Right Hemisphere ◽  
Hippocampal Sclerosis ◽  
Hemispheric Dominance ◽  
Control Group ◽  
Visual Object ◽  
Object Naming ◽  
Cognitive Estimation ◽  
Significant Impairment ◽  
Frontal Epilepsy

Abstract Purpose This study addresses specific impairments of cognitive estimation and object naming in patients with focal temporal lobe epilepsy (TLE) and frontal lobe epilepsy (FLE). It was investigated whether selective impairments can be explained by differences in lesion localization and functional hemispheric specialization. Materials and Methods Seventy-eight patients (39 females, 39 males) with FLE and TLE were investigated using the German “Test zum Kognitiven Schätzen” and the “Boston Naming Test” to assess cognitive estimation abilities and visual object naming. Questions According to theoretical models that support a distinct hemispheric dominance for estimation and naming, it was expected that epilepsy localization in the right hemisphere would result in impairments of cognitive estimation, whereas patients with left epileptogenic foci would show deficits in object naming. Results In comparison to a healthy control group, a significant impairment in estimation performance was present in patients with right temporal mesial and right frontal epilepsy. A significant impairment of naming performance was found in patients with left temporal mesial, right temporal mesial, left temporal neocortical, and left frontal epilepsy. Overall, localization-dependent deficits were detected in patients with hippocampal sclerosis (cognitive estimation and object naming), right frontal epilepsy (cognitive estimation), and left temporal neocortical/left frontal epilepsy (object naming). In patients with right temporal neocortical epilepsy, no functional deficits were found. Conclusion It is hypothesized that there is a functional dissociation between cognitive estimation processes and object naming due to different functional specialization of the left and right hemispheres, respectively.

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