Neural sources of focused attention in visual search

Jens Max Hopf, Steven J. Luck, Massimo Girelli, Tilman Hagner, George R Mangun, Henning Scheich, Hans Jochen Heinze

Research output: Contribution to journalArticle

288 Citations (Scopus)

Abstract

Previous studios of visual search in humans using event-related potentials (ERPs) have revealed an ERP component called 'N2pc' (180-280 ms) that reflects the focusing of attention onto potential target items in the search array. The present study was designed to localize the neuroanatomical sources of this component by means of magnetoencephalographic (MEG) recordings, which provide greater spatial precision than ERP recordings. MEG recordings were obtained with an array of 148 magnetometers from six normal adult subjects, one of whom was tested in multiple sessions so that both single-subject and group analyses could be performed. Source localization procedures revealed that the N2pc is composed of two distinct neural responses, an early parietal Source (180-200 ms) and a later occipito-temporal source (220-240 ms). These findings are consistent with the proposal that parietal areas are used to initiate a shift of attention within a visual search array and that the focusing of attention is implemented by extrastriate areas of the occipital and inferior temporal cortex.

Original languageEnglish (US)
Pages (from-to)1233-1241
Number of pages9
JournalCerebral Cortex
Volume10
Issue number12
StatePublished - 2000
Externally publishedYes

Fingerprint

Evoked Potentials
Temporal Lobe

ASJC Scopus subject areas

  • Neuroscience(all)

Cite this

Hopf, J. M., Luck, S. J., Girelli, M., Hagner, T., Mangun, G. R., Scheich, H., & Heinze, H. J. (2000). Neural sources of focused attention in visual search. Cerebral Cortex, 10(12), 1233-1241.

Neural sources of focused attention in visual search. / Hopf, Jens Max; Luck, Steven J.; Girelli, Massimo; Hagner, Tilman; Mangun, George R; Scheich, Henning; Heinze, Hans Jochen.

In: Cerebral Cortex, Vol. 10, No. 12, 2000, p. 1233-1241.

Research output: Contribution to journalArticle

Hopf, JM, Luck, SJ, Girelli, M, Hagner, T, Mangun, GR, Scheich, H & Heinze, HJ 2000, 'Neural sources of focused attention in visual search', Cerebral Cortex, vol. 10, no. 12, pp. 1233-1241.
Hopf JM, Luck SJ, Girelli M, Hagner T, Mangun GR, Scheich H et al. Neural sources of focused attention in visual search. Cerebral Cortex. 2000;10(12):1233-1241.
Hopf, Jens Max ; Luck, Steven J. ; Girelli, Massimo ; Hagner, Tilman ; Mangun, George R ; Scheich, Henning ; Heinze, Hans Jochen. / Neural sources of focused attention in visual search. In: Cerebral Cortex. 2000 ; Vol. 10, No. 12. pp. 1233-1241.
@article{a535a0b0ecc34b9fa3240ec6f868ada6,
title = "Neural sources of focused attention in visual search",
abstract = "Previous studios of visual search in humans using event-related potentials (ERPs) have revealed an ERP component called 'N2pc' (180-280 ms) that reflects the focusing of attention onto potential target items in the search array. The present study was designed to localize the neuroanatomical sources of this component by means of magnetoencephalographic (MEG) recordings, which provide greater spatial precision than ERP recordings. MEG recordings were obtained with an array of 148 magnetometers from six normal adult subjects, one of whom was tested in multiple sessions so that both single-subject and group analyses could be performed. Source localization procedures revealed that the N2pc is composed of two distinct neural responses, an early parietal Source (180-200 ms) and a later occipito-temporal source (220-240 ms). These findings are consistent with the proposal that parietal areas are used to initiate a shift of attention within a visual search array and that the focusing of attention is implemented by extrastriate areas of the occipital and inferior temporal cortex.",
author = "Hopf, {Jens Max} and Luck, {Steven J.} and Massimo Girelli and Tilman Hagner and Mangun, {George R} and Henning Scheich and Heinze, {Hans Jochen}",
year = "2000",
language = "English (US)",
volume = "10",
pages = "1233--1241",
journal = "Cerebral Cortex",
issn = "1047-3211",
publisher = "Oxford University Press",
number = "12",

}

TY - JOUR

T1 - Neural sources of focused attention in visual search

AU - Hopf, Jens Max

AU - Luck, Steven J.

AU - Girelli, Massimo

AU - Hagner, Tilman

AU - Mangun, George R

AU - Scheich, Henning

AU - Heinze, Hans Jochen

PY - 2000

Y1 - 2000

N2 - Previous studios of visual search in humans using event-related potentials (ERPs) have revealed an ERP component called 'N2pc' (180-280 ms) that reflects the focusing of attention onto potential target items in the search array. The present study was designed to localize the neuroanatomical sources of this component by means of magnetoencephalographic (MEG) recordings, which provide greater spatial precision than ERP recordings. MEG recordings were obtained with an array of 148 magnetometers from six normal adult subjects, one of whom was tested in multiple sessions so that both single-subject and group analyses could be performed. Source localization procedures revealed that the N2pc is composed of two distinct neural responses, an early parietal Source (180-200 ms) and a later occipito-temporal source (220-240 ms). These findings are consistent with the proposal that parietal areas are used to initiate a shift of attention within a visual search array and that the focusing of attention is implemented by extrastriate areas of the occipital and inferior temporal cortex.

AB - Previous studios of visual search in humans using event-related potentials (ERPs) have revealed an ERP component called 'N2pc' (180-280 ms) that reflects the focusing of attention onto potential target items in the search array. The present study was designed to localize the neuroanatomical sources of this component by means of magnetoencephalographic (MEG) recordings, which provide greater spatial precision than ERP recordings. MEG recordings were obtained with an array of 148 magnetometers from six normal adult subjects, one of whom was tested in multiple sessions so that both single-subject and group analyses could be performed. Source localization procedures revealed that the N2pc is composed of two distinct neural responses, an early parietal Source (180-200 ms) and a later occipito-temporal source (220-240 ms). These findings are consistent with the proposal that parietal areas are used to initiate a shift of attention within a visual search array and that the focusing of attention is implemented by extrastriate areas of the occipital and inferior temporal cortex.

UR - http://www.scopus.com/inward/record.url?scp=0033693503&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0033693503&partnerID=8YFLogxK

M3 - Article

C2 - 11073872

AN - SCOPUS:0033693503

VL - 10

SP - 1233

EP - 1241

JO - Cerebral Cortex

JF - Cerebral Cortex

SN - 1047-3211

IS - 12

ER -