Decoding the contents of visual short-term memory from human visual and parietal cortex.
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Decoding the contents of visual short-term memory from human visual and parietal cortex. / Christophel, Thomas B; Hebart, Martin; Haynes, John-Dylan.
in: J NEUROSCI, Jahrgang 32, Nr. 38, 38, 2012, S. 12983-12989.Publikationen: SCORING: Beitrag in Fachzeitschrift/Zeitung › SCORING: Zeitschriftenaufsatz › Forschung › Begutachtung
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TY - JOUR
T1 - Decoding the contents of visual short-term memory from human visual and parietal cortex.
AU - Christophel, Thomas B
AU - Hebart, Martin
AU - Haynes, John-Dylan
PY - 2012
Y1 - 2012
N2 - How content is stored in the human brain during visual short-term memory (VSTM) is still an open question. Different theories postulate storage of remembered stimuli in prefrontal, parietal, or visual areas. Aiming at a distinction between these theories, we investigated the content-specificity of BOLD signals from various brain regions during a VSTM task using multivariate pattern classification. To participate in memory maintenance, candidate regions would need to have information about the different contents held in memory. We identified two brain regions where local patterns of fMRI signals represented the remembered content. Apart from the previously established storage in visual areas, we also discovered an area in the posterior parietal cortex where activity patterns allowed us to decode the specific stimuli held in memory. Our results demonstrate that storage in VSTM extends beyond visual areas, but no frontal regions were found. Thus, while frontal and parietal areas typically coactivate during VSTM, maintenance of content in the frontoparietal network might be limited to parietal cortex.
AB - How content is stored in the human brain during visual short-term memory (VSTM) is still an open question. Different theories postulate storage of remembered stimuli in prefrontal, parietal, or visual areas. Aiming at a distinction between these theories, we investigated the content-specificity of BOLD signals from various brain regions during a VSTM task using multivariate pattern classification. To participate in memory maintenance, candidate regions would need to have information about the different contents held in memory. We identified two brain regions where local patterns of fMRI signals represented the remembered content. Apart from the previously established storage in visual areas, we also discovered an area in the posterior parietal cortex where activity patterns allowed us to decode the specific stimuli held in memory. Our results demonstrate that storage in VSTM extends beyond visual areas, but no frontal regions were found. Thus, while frontal and parietal areas typically coactivate during VSTM, maintenance of content in the frontoparietal network might be limited to parietal cortex.
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Neuropsychological Tests
KW - Photic Stimulation
KW - Magnetic Resonance Imaging
KW - Image Processing, Computer-Assisted
KW - Analysis of Variance
KW - Reaction Time
KW - Brain Mapping
KW - Visual Perception/physiology
KW - Cues
KW - Oxygen/blood
KW - Memory, Short-Term/physiology
KW - Parietal Lobe/blood supply/physiology
KW - Signal Detection, Psychological
KW - Visual Cortex/blood supply/physiology
KW - Adult
KW - Humans
KW - Male
KW - Female
KW - Neuropsychological Tests
KW - Photic Stimulation
KW - Magnetic Resonance Imaging
KW - Image Processing, Computer-Assisted
KW - Analysis of Variance
KW - Reaction Time
KW - Brain Mapping
KW - Visual Perception/physiology
KW - Cues
KW - Oxygen/blood
KW - Memory, Short-Term/physiology
KW - Parietal Lobe/blood supply/physiology
KW - Signal Detection, Psychological
KW - Visual Cortex/blood supply/physiology
M3 - SCORING: Journal article
VL - 32
SP - 12983
EP - 12989
JO - J NEUROSCI
JF - J NEUROSCI
SN - 0270-6474
IS - 38
M1 - 38
ER -
