Role of the left posterior middle temporal gyrus in shape recognition and its reconstruction during drawing: A study combining transcranial magnetic stimulation and functional near infrared spectroscopy

There are numerous reports of enhanced or emerged visual arts abilities in patients with semantic impairment. These reports led to the theory that a loss of function on the language side of the brain can result in changes of ability to draw and/or to paint. Further, the left posterior middle tempora...

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Bibliographic Details
Published in:PloS one 2024-05, Vol.19 (5), p.e0302375-e0302375
Main Authors: Okamoto, Nakako, Seiyama, Akitoshi, Hori, Shota, Takahashi, Satoru
Format: Article
Language:English
Subjects:
Adult
Aphasia
Behavior
Brain
Brain Mapping - methods
Dementia
Drawing ability
Experiments
Female
Form perception
Hemispheric laterality
Humans
Infrared spectra
Infrared spectroscopy
Learning disabilities
Magnetic fields
Male
Mediation
Medical imaging
Medical research
Medicine, Experimental
Near infrared radiation
Near infrared spectroscopy
Neuroimaging
Object recognition
Pattern Recognition, Visual - physiology
Physiological aspects
Reconstruction
Semantics
Shape recognition
Spectroscopy, Near-Infrared - methods
Spectrum analysis
Temporal gyrus
Temporal Lobe - diagnostic imaging
Temporal Lobe - physiology
Temporal lobes
Transcranial magnetic stimulation
Transcranial Magnetic Stimulation - methods
Visual tasks
Young Adult
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Summary:There are numerous reports of enhanced or emerged visual arts abilities in patients with semantic impairment. These reports led to the theory that a loss of function on the language side of the brain can result in changes of ability to draw and/or to paint. Further, the left posterior middle temporal gyrus (l-pMTG) has been revealed to contribute to the higher control semantic mechanisms with objects recognition and integration of visual information, within a widely distributed network of the left hemisphere. Nevertheless, the theory has not been fully studied in neural bases. The aim of this study is to examine role of the l-pMTG on shape recognition and its reconstruction within drawing behavior, by using a combining method of the repetitive transcranial magnetic stimulation (rTMS) and functional near-infrared spectroscopy (fNIRS). Eighteen healthy participants received a low frequency inhibitory rTMS to their l-pMTG during the drawing task of the Benton Visual Retention Test (BVRT). There was a significant decrease of the mean accuracy of reproductions in the Complex designs of the BVRT, compared to the Simple and Medium designs. The fNIRS data showed strong negative correlations with the results of the BVRT. Though our hypothesis had a contradiction that rTMS would have inhibited the brain activity in the stimulated site, the results suggest that shape recognition and its reconstruction such as the BVRT require neural activations of the l-TL as well as that of the l-pMTG.
ISSN:1932-6203
1932-6203
DOI:10.1371/journal.pone.0302375