The enhancement of cortical excitability over the DLPFC before and during training impairs categorization in the prototype distortion task
► The effects of tDCS and tRNS have been investigated in a categorization task. ► The right and left dorsolateral prefrontal cortex has been targeted. ► Stimulation took place before and during the training part of the task. ► We have observed the prototype effect in the sham stimulation group. ► Th...
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| Veröffentlicht in: | Neuropsychologia 2011-06, Vol.49 (7), p.1974-1980 |
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| container_issue | 7 |
| container_start_page | 1974 |
| container_title | Neuropsychologia |
| container_volume | 49 |
| creator | Ambrus, Géza Gergely Zimmer, Márta Kincses, Zsigmond Tamás Harza, Irén Kovács, Gyula Paulus, Walter Antal, Andrea |
| description | ► The effects of tDCS and tRNS have been investigated in a categorization task. ► The right and left dorsolateral prefrontal cortex has been targeted. ► Stimulation took place before and during the training part of the task. ► We have observed the prototype effect in the sham stimulation group. ► The prototype-effect was severed in the active stimulation groups.
The present study investigated the effects of transcranial weak electrical stimulation techniques applied to the right and left dorsolateral prefrontal cortex (DLPFC) on categorization learning measured using a variant of the prototype distortion task.
During the training phase of this task subjects saw low- and high distortions of a prototype dot-pattern. 60 participants received 10min of either anodal or cathodal transcranial direct current (tDCS), transcranial random noise (tRNS) or sham stimulation before and during the training. We have assessed the effects of the intervention during a test phase, where the subjects had to decide whether the consecutive high- and low-distortion versions of the prototype or random patterns that were presented belonged to the category established in the training phase.
Our results show that the categorization of prototypes is significantly impaired by the application of anodal tDCS and tRNS to the DLPFC. The prototype-effect, observable in the case of the sham stimulation group, was severed in all active stimulation conditions. |
| doi_str_mv | 10.1016/j.neuropsychologia.2011.03.026 |
| format | Article |
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The present study investigated the effects of transcranial weak electrical stimulation techniques applied to the right and left dorsolateral prefrontal cortex (DLPFC) on categorization learning measured using a variant of the prototype distortion task.
During the training phase of this task subjects saw low- and high distortions of a prototype dot-pattern. 60 participants received 10min of either anodal or cathodal transcranial direct current (tDCS), transcranial random noise (tRNS) or sham stimulation before and during the training. We have assessed the effects of the intervention during a test phase, where the subjects had to decide whether the consecutive high- and low-distortion versions of the prototype or random patterns that were presented belonged to the category established in the training phase.
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The present study investigated the effects of transcranial weak electrical stimulation techniques applied to the right and left dorsolateral prefrontal cortex (DLPFC) on categorization learning measured using a variant of the prototype distortion task.
During the training phase of this task subjects saw low- and high distortions of a prototype dot-pattern. 60 participants received 10min of either anodal or cathodal transcranial direct current (tDCS), transcranial random noise (tRNS) or sham stimulation before and during the training. We have assessed the effects of the intervention during a test phase, where the subjects had to decide whether the consecutive high- and low-distortion versions of the prototype or random patterns that were presented belonged to the category established in the training phase.
Our results show that the categorization of prototypes is significantly impaired by the application of anodal tDCS and tRNS to the DLPFC. The prototype-effect, observable in the case of the sham stimulation group, was severed in all active stimulation conditions.</description><subject>Acoustic Stimulation</subject><subject>Adult</subject><subject>Anatomical correlates of behavior</subject><subject>Behavioral psychophysiology</subject><subject>Biological and medical sciences</subject><subject>Dorsolateral prefrontal cortex</subject><subject>Electric Stimulation</subject><subject>Female</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Humans</subject><subject>Learning - physiology</subject><subject>Male</subject><subject>Perception</subject><subject>Perceptual Distortion - physiology</subject><subject>Photic Stimulation</subject><subject>Prefrontal Cortex - physiology</subject><subject>Prototype distortion task</subject><subject>Psychology. 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Psychophysiology</subject><subject>Psychomotor Performance - physiology</subject><subject>Transcranial direct current stimulation</subject><subject>Transcranial random noise stimulation</subject><subject>Vision</subject><subject>Visual categorization</subject><subject>Visual Perception - physiology</subject><subject>Young Adult</subject><issn>0028-3932</issn><issn>1873-3514</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2011</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqNkc2O0zAQgCMEYsvCKyBfgFOC_5I4FyRUdlmkSnBYzpZjj1uXJA62s6I8wj41Li0gcYHTjDTf_Gi-onhJcEUwaV7vqwmW4Od40Ds_-K1TFcWEVJhVmDYPihURLStZTfjDYoUxFSXrGL0onsS4xxjzmorHxQUlnOO6oavi_nYHCKadmjSMMCXkLdI-JKfVgOCbdkn1bnDpgPwdBJQy_W7z6XqNerA-AFKTQWYJbtqiFJSbjokbZ-VCRFol2Prgvqvk_ITc9LN9Dj75dJgBGRfTcVWuJRW_PC0eWTVEeHaOl8Xn66vb9U25-fj-w_rtptS8Zqk0mHaEUouNaOtegTCWcayNEg0Yza0RnNdCKAu0J_kBhuKu1p3FloMitmOXxavT3HzJ1wVikqOLGoZBTeCXKEXLiWg6XP-bbARr27bBmXxzInXwMQawcg5uVOEgCZZHcXIv_xYnj-IkZjKLywOen1ct_Qjmd_svUxl4cQZUzG5syMZc_MNxyuumYZm7OXGQX3jnIMioHWS7xgXQSRrv_vemH9ffxPQ</recordid><startdate>20110601</startdate><enddate>20110601</enddate><creator>Ambrus, Géza Gergely</creator><creator>Zimmer, Márta</creator><creator>Kincses, Zsigmond Tamás</creator><creator>Harza, Irén</creator><creator>Kovács, Gyula</creator><creator>Paulus, Walter</creator><creator>Antal, Andrea</creator><general>Elsevier Ltd</general><general>Elsevier</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7TK</scope></search><sort><creationdate>20110601</creationdate><title>The enhancement of cortical excitability over the DLPFC before and during training impairs categorization in the prototype distortion task</title><author>Ambrus, Géza Gergely ; Zimmer, Márta ; Kincses, Zsigmond Tamás ; Harza, Irén ; Kovács, Gyula ; Paulus, Walter ; Antal, Andrea</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c453t-d029122f0d875bae8df340cda86edc4fd844588afe2b1028d2095c9f0f4ea1f93</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2011</creationdate><topic>Acoustic Stimulation</topic><topic>Adult</topic><topic>Anatomical correlates of behavior</topic><topic>Behavioral psychophysiology</topic><topic>Biological and medical sciences</topic><topic>Dorsolateral prefrontal cortex</topic><topic>Electric Stimulation</topic><topic>Female</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Humans</topic><topic>Learning - physiology</topic><topic>Male</topic><topic>Perception</topic><topic>Perceptual Distortion - physiology</topic><topic>Photic Stimulation</topic><topic>Prefrontal Cortex - physiology</topic><topic>Prototype distortion task</topic><topic>Psychology. Psychoanalysis. Psychiatry</topic><topic>Psychology. Psychophysiology</topic><topic>Psychomotor Performance - physiology</topic><topic>Transcranial direct current stimulation</topic><topic>Transcranial random noise stimulation</topic><topic>Vision</topic><topic>Visual categorization</topic><topic>Visual Perception - physiology</topic><topic>Young Adult</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Ambrus, Géza Gergely</creatorcontrib><creatorcontrib>Zimmer, Márta</creatorcontrib><creatorcontrib>Kincses, Zsigmond Tamás</creatorcontrib><creatorcontrib>Harza, Irén</creatorcontrib><creatorcontrib>Kovács, Gyula</creatorcontrib><creatorcontrib>Paulus, Walter</creatorcontrib><creatorcontrib>Antal, Andrea</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Neurosciences Abstracts</collection><jtitle>Neuropsychologia</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ambrus, Géza Gergely</au><au>Zimmer, Márta</au><au>Kincses, Zsigmond Tamás</au><au>Harza, Irén</au><au>Kovács, Gyula</au><au>Paulus, Walter</au><au>Antal, Andrea</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The enhancement of cortical excitability over the DLPFC before and during training impairs categorization in the prototype distortion task</atitle><jtitle>Neuropsychologia</jtitle><addtitle>Neuropsychologia</addtitle><date>2011-06-01</date><risdate>2011</risdate><volume>49</volume><issue>7</issue><spage>1974</spage><epage>1980</epage><pages>1974-1980</pages><issn>0028-3932</issn><eissn>1873-3514</eissn><coden>NUPSA6</coden><abstract>► The effects of tDCS and tRNS have been investigated in a categorization task. ► The right and left dorsolateral prefrontal cortex has been targeted. ► Stimulation took place before and during the training part of the task. ► We have observed the prototype effect in the sham stimulation group. ► The prototype-effect was severed in the active stimulation groups.
The present study investigated the effects of transcranial weak electrical stimulation techniques applied to the right and left dorsolateral prefrontal cortex (DLPFC) on categorization learning measured using a variant of the prototype distortion task.
During the training phase of this task subjects saw low- and high distortions of a prototype dot-pattern. 60 participants received 10min of either anodal or cathodal transcranial direct current (tDCS), transcranial random noise (tRNS) or sham stimulation before and during the training. We have assessed the effects of the intervention during a test phase, where the subjects had to decide whether the consecutive high- and low-distortion versions of the prototype or random patterns that were presented belonged to the category established in the training phase.
Our results show that the categorization of prototypes is significantly impaired by the application of anodal tDCS and tRNS to the DLPFC. The prototype-effect, observable in the case of the sham stimulation group, was severed in all active stimulation conditions.</abstract><cop>Kidlington</cop><pub>Elsevier Ltd</pub><pmid>21440562</pmid><doi>10.1016/j.neuropsychologia.2011.03.026</doi><tpages>7</tpages></addata></record> |
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| ispartof | Neuropsychologia, 2011-06, Vol.49 (7), p.1974-1980 |
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| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals |
| subjects | Acoustic Stimulation Adult Anatomical correlates of behavior Behavioral psychophysiology Biological and medical sciences Dorsolateral prefrontal cortex Electric Stimulation Female Fundamental and applied biological sciences. Psychology Humans Learning - physiology Male Perception Perceptual Distortion - physiology Photic Stimulation Prefrontal Cortex - physiology Prototype distortion task Psychology. Psychoanalysis. Psychiatry Psychology. Psychophysiology Psychomotor Performance - physiology Transcranial direct current stimulation Transcranial random noise stimulation Vision Visual categorization Visual Perception - physiology Young Adult |
| title | The enhancement of cortical excitability over the DLPFC before and during training impairs categorization in the prototype distortion task |
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