JOURNAL ARTICLE

Effects of attentional filtering demands on preparatory ERPs elicited in a spatial cueing task

Ellen Seiss, Jon Driver, Martin Eimer
Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology 2009, 120 (6): 1087-95
19410504

OBJECTIVE: We used ERP measures to investigate how attentional filtering requirements affect preparatory attentional control and spatially selective visual processing.

METHODS: In a spatial cueing experiment, attentional filtering demands were manipulated by presenting task-relevant visual stimuli either in isolation (target-only task) or together with irrelevant adjacent distractors (target-plus-distractors task). ERPs were recorded in response to informative spatial precues, and in response to subsequent visual stimuli at attended and unattended locations.

RESULTS: The preparatory ADAN component elicited during the cue-target interval was larger and more sustained in the target-plus-distractors task, reflecting the demand of stronger attentional filtering. By contrast, two other preparatory lateralised components (EDAN and LDAP) were unaffected by the attentional filtering demand. Similar enhancements of P1 and N1 components in response to the lateral imperative visual stimuli were observed at cued versus uncued locations, regardless of filtering demand, whereas later attentional-related negativities beyond 200 ms post-stimulus were larger the target-plus-distractor task.

CONCLUSIONS: Our results implicate that the ADAN component is linked to preparatory top-down control processes involved in the attentional filtering of irrelevant distractors; such filtering also affects later attention-related negativities recorded after the onset of the imperative stimulus.

SIGNIFICANCE: ERPs can reveal effects of expected attentional filtering of irrelevant distractors on preparatory attentional control processes and spatially selective visual processing.

Full Text Links

Find Full Text Links for this Article

Discussion

You are not logged in. Sign Up or Log In to join the discussion.

Related Papers

Remove bar
Read by QxMD icon Read
19410504
×

Save your favorite articles in one place with a free QxMD account.

×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"