Universität zu Köln

Turgut, Nergiz, Jansen, Anna-Lena, Nielsen, Joern, Heber, Ines, Eling, Paul and Hildebrandt, Helmut (2021). Repeated application of the covert shift of attention task improves endogenous but not exogenous attention in patients with unilateral visuospatial inattention. Brain Cogn., 151. SAN DIEGO: ACADEMIC PRESS INC ELSEVIER SCIENCE. ISSN 1090-2147

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Abstract

Background: Most neglect treatment studies focus on automatic re-orientation procedures, assuming a deficit in automatic processes. We compare an automatic- and a controlled procedure, using the endogenous and exogenous variants of Posner's covert shift of attention task. Method: In two experiments, neglect patients and patients with a right hemispherical stroke without neglect performed three blocks of Posner's covert shift of attention task (Posner Task) on two days. In Study 1 we used endogenous cues, in Study 2, exogenous cues. Results: In the endogenous task, neglect patients improved significantly with valid left-sided cues between block 1 and 2 on Day 1, subsequently showing a plateauing. They also showed a gradual improvement on invalid trials on both days. In the exogenous condition, all participants responded only increasingly faster on trials with a long stimulus onset asynchrony. Practicing on both tasks led to fewer omissions for left-sided targets, minimally in the exogenous and clearly in the endogenous condition. Conclusion: In line with prior neuroanatomical studies, our study shows that practicing an endogenous, but not an exogenous, visuospatial attention task leads to significant improvements in neglect patients, especially for invalid trials, suggesting that neglect treatments based on top-down strategies should be given more attention.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Turgut, Nergiz UNSPECIFIED UNSPECIFIED UNSPECIFIED Jansen, Anna-Lena UNSPECIFIED UNSPECIFIED UNSPECIFIED Nielsen, Joern UNSPECIFIED UNSPECIFIED UNSPECIFIED Heber, Ines UNSPECIFIED UNSPECIFIED UNSPECIFIED Eling, Paul UNSPECIFIED UNSPECIFIED UNSPECIFIED Hildebrandt, Helmut UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-589503
DOI:	10.1016/j.bc.2021.105732
Journal or Publication Title:	Brain Cogn.
Volume:	151
Date:	2021
Publisher:	ACADEMIC PRESS INC ELSEVIER SCIENCE
Place of Publication:	SAN DIEGO
ISSN:	1090-2147
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language SPATIAL NEGLECT; STROKE PATIENTS; VIBRATION; BIAS Multiple languages Neurosciences; Psychology, Experimental Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/58950