Juan D Delius
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Explore the profile of Juan D Delius including associated specialties, affiliations and a list of published articles.
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15
Citations
43
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Recent Articles
1.
Ostheim J, Delius J, Delius J
J Exp Biol
. 2020 Apr;
223(Pt 11).
PMID: 32341175
The visual control of pecking by pigeons () has latterly been thought to be restricted to the fixation stops interrupting their downward head movements because these stops prevent interference by...
2.
Delius J, Delius J
Sci Rep
. 2019 Sep;
9(1):13929.
PMID: 31558750
Pigeons learned to discriminate two different patterns displayed with miniature light-emitting diode arrays. They were then tested with 84 interspersed, non-reinforced degraded pattern pairs. Choices ranged between 100% and 50%...
3.
Delius J, Delius J, Lee J
PLoS One
. 2017 Nov;
12(11):e0187541.
PMID: 29121110
This note looks into the reasons why earlier reports may have arrived at differing conclusions about pigeons' capacity to categorize bilaterally symmetric and asymmetric visual patterns. Attention is drawn to...
4.
Delius J, Acerbo M, Krug I, Lee J, Leydel R
Behav Pharmacol
. 2014 Sep;
26(1-2):139-58.
PMID: 25192069
Apomorphine (apo), an unspecific direct dopamine agonist, elicits an intense and lasting pecking bout in pigeons. Apo yielded orderly dose-response functions, and repeated administrations led to sensitization. Strain and individual...
5.
Raabe S, Hoger R, Delius J
Percept Mot Skills
. 2007 Mar;
103(3):917-30.
PMID: 17326523
When humans decide whether two visual stimuli are identical or mirror images of each other and one of the stimuli is rotated with respect to the other, the time discrimination...
6.
Wright A, Delius J
J Exp Psychol Anim Behav Process
. 2005 Oct;
31(4):425-32.
PMID: 16248729
Eight pigeons learned either matching (to sample) or oddity (from sample) with or without reward for sample responding. The training stimuli were coarse-white, fine-black, or smooth-mauve gravels in pots with...
7.
Acerbo M, Vyboh P, Kostal L, Kubikova L, Delius J
Exp Brain Res
. 2004 Dec;
160(4):533-7.
PMID: 15599724
When pigeons are repeatedly administered a dose of apomorphine they show an increasing behavioral response, much as rodents do. In birds this expresses itself in an augmented pecking response. This...
8.
Acerbo M, Delius J
Behav Neurosci
. 2004 Oct;
118(5):1080-8.
PMID: 15506890
Repeated administration of apomorphine leads to a context-dependent pecking response sensitization. Previously sensitized pigeons (Columba livia) challenged with saline in the same context show a conditioned response (CR). The authors...
9.
Acerbo M, Lee J, Delius J
Behav Brain Res
. 2004 Apr;
151(1-2):201-8.
PMID: 15084436
The dopamine agonist apomorphine (apo) elicits bouts of stereotyped pecking in pigeons, a response which increases with successive apo injections. This sensitization is strongly context-specific and has been suggested to...
10.
Melsbach G, Siemann M, Delius J
Exp Psychol
. 2003 Nov;
50(4):285-97.
PMID: 14587175
The interaction between nonassociative learning (presentation frequencies) and associative learning (reinforcement rates) in stimulus discrimination performance was investigated. Subjects were taught to discriminate lists of visual pattern pairs. When they...