Transcranial direct current stimulation accelerates allocentric target detection.

نویسندگان

  • Jared Medina
  • Jacques Beauvais
  • Abhishek Datta
  • Marom Bikson
  • H Branch Coslett
  • Roy H Hamilton
چکیده

BACKGROUND Previous research on hemispatial neglect has provided evidence for dissociable mechanisms for egocentric and allocentric processing. Although a few studies have examined whether tDCS to posterior parietal cortex can be beneficial for attentional processing in neurologically intact individuals, none have examined the potential effect of tDCS on allocentric and/or egocentric processing. OBJECTIVE/HYPOTHESIS Our objective was to examine whether transcranial direct current stimulation (tDCS), a noninvasive brain stimulation technique that can increase (anodal) or decrease (cathodal) cortical activity, can affect visuospatial processing in an allocentric and/or egocentric frame of reference. METHODS We tested healthy individuals on a target detection task in which the target--a circle with a gap--was either to the right or left of the viewer (egocentric), or contained a gap on the right or left side of the circle (allocentric). Individuals performed the task before, during, and after tDCS to the posterior parietal cortex in one of three stimulation conditions--right anodal/left cathodal, right cathodal/left anodal, and sham. RESULTS We found an allocentric hemispatial effect both during and after tDCS, such that right anodal/left cathodal tDCS resulted in faster reaction times for detecting stimuli with left-sided gaps compared to right-sided gaps. CONCLUSIONS Our study suggests that right anodal/left cathodal tDCS has a facilitatory effect on allocentric visuospatial processing, and might be useful as a therapeutic technique for individuals suffering from allocentric neglect.

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Effect of Transcranial Direct Current Stimulation on Auditory-Verbal Memory in Healthy Elderly

Background and purpose: Auditory-verbal memory decreases with age. One method to compensate this weakness is transcranial direct current stimulation. The current study investigated the effect of Anodal Transcranial Direct Current Stimulation on auditory-verbal memory performance of healthy elderly people. Materials and methods: In a randomized clinical trial, 42 healthy subjects with no histor...

متن کامل

Attention-deficit/Hyperactivity, sustained attention, response inhibition, Mindfulness-based socio-emotional Learning, Transcranial Direct Current Stimulation.

This research aimed to compare the effectiveness of mindfulness-based socio-emotional learning program with/and without Transcranial Direct Current Stimulation on sustained attention and response inhibition in children with attention deficit/hyperactivity disorder. This research was a semi-experimental study with a pre-test and post-test design with a control group. The statistical population i...

متن کامل

Does the Longer Application of Anodal-Transcranial Direct Current Stimulation Increase Corticomotor Excitability Further? A Pilot Study

 Introduction: Anodal transcranial direct current stimulation (a-tDCS) of the primary motor cortex (M1) has been shown to be effective in increasing corticomotor excitability.  Methods: We investigated whether longer applications of a-tDCS coincide with greater increases in corticomotor excitability compared to shorter application of a-tDCS. Ten right-handed healthy participants received one se...

متن کامل

W6: Transcranial Direct Current Stimulation Workshop

It is an Intensive 1-day course for introducing utilizing transcranial direct current stimulation (tDCS) in an applied format. This technique is a noninvasive brain stimulation that uses direct electrical currents over the head to stimulate specific parts of the brain which modulates neuronal activity. It has strong potentiality in the field of medical and neuroscientific research. Anodal stimu...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

برای دانلود متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:
  • Brain stimulation

دوره 6 3  شماره 

صفحات  -

تاریخ انتشار 2013