Effects of chlordiazepoxide, ripazepam and d-amphetamine on conditioned acceleration of timing behaviour in rats

1976 ◽  
Vol 48 (2) ◽  
pp. 209-215 ◽  
Author(s):  
D. J. Sanger ◽  
D. E. Blackman
Keyword(s):  
Conditioned Acceleration ◽  
Timing Behaviour

scholarly journals An Analysis of Out-of-home Non-work Activity Time Use and Timing Behaviour Based on Work Schedule and Trip Time

2015 ◽  
Vol 125 ◽  
pp. 504-511
Author(s):  
Melawaty Agustien ◽  
Ade Sjafruddin ◽  
Harun Al Rasyid S. Lubis ◽  
Sony S. Wibowo
Keyword(s):  
Time Use ◽  
Work Schedule ◽  
Activity Time ◽  
Work Activity ◽  
Trip Time ◽  
Timing Behaviour

scholarly journals Evolution of temporal interaction: A comparative approach to social timing

2017 ◽  
Author(s):  
Andrea Ravignani ◽  
Sonja Kotz
Keyword(s):  
Social Behaviour ◽  
Evolutionary History ◽  
Animal Species ◽  
Comparative Approach ◽  
Evolutionary Perspective ◽  
Sensory Modalities ◽  
Temporal Interaction ◽  
Taxonomic Groups ◽  
Timing Behaviour ◽  
Timing Processes

Increasing empirical research shows a deep connection between timing processes and neural processing of social information. An integrative theoretical framework for prospective studies in humans was recently proposed, linking timing to sociality. A similar framework guiding research in non-human animals is desirable, ideally encompassing as many taxonomic groups and sensory modalities as possible in order to embrace the diversity of social and timing behaviour across species. Here we expand on a previous theoretical account, introducing this debate to animal behaviour. We suggest adopting an evolutionary perspective on social timing in animals: i.e. a comparative approach to probe the link between temporal and social behaviour across a broad range of animal species. This approach should advance our understanding of animal social timing that is, how social behaviour and timing are mutually affected, and possibly of its evolutionary history in our own lineage. We conclude by identifying outstanding questions and testable hypotheses in animal social timing.

scholarly journals DTA-PUF: Dynamic Timing-aware Physical Unclonable Function for Resource-constrained Devices

2021 ◽  
Vol 17 (3) ◽  
pp. 1-24
Author(s):  
Ioannis Tsiokanos ◽  
Jack Miskelly ◽  
Chongyan Gu ◽  
Maire O’neill ◽  
Georgios Karakonstantis
Keyword(s):  
Response Mechanism ◽  
Resource Constrained ◽  
Process Technology ◽  
Physical Unclonable Functions ◽  
Timing Errors ◽  
Floating Point Unit ◽  
Processing Effort ◽  
Timing Behaviour ◽  
Resource Constrained Devices ◽  
Constrained Devices

In recent years, physical unclonable functions (PUFs) have gained a lot of attention as mechanisms for hardware-rooted device authentication. While the majority of the previously proposed PUFs derive entropy using dedicated circuitry, software PUFs achieve this from existing circuitry in a system. Such software-derived designs are highly desirable for low-power embedded systems as they require no hardware overhead. However, these software PUFs induce considerable processing overheads that hinder their adoption in resource-constrained devices. In this article, we propose DTA-PUF, a novel, software PUF design that exploits the instruction- and data-dependent dynamic timing behaviour of pipelined cores to provide a reliable challenge-response mechanism without requiring any extra hardware. DTA-PUF accepts sequences of instructions as an input challenge and produces an output response based on the manifested timing errors under specific over-clocked settings. To lower the required processing effort, we systematically select instruction sequences that maximise error-rate. The application to a post-layout pipelined floating-point unit, which is implemented in 45 nm process technology, demonstrates the effectiveness and practicability of our PUF design. Finally, DTA-PUF requires up to 50× fewer instructions than existing software processor PUF designs, limiting processing costs and resulting in up to 26% power savings.

scholarly journals GX 17+2: X-ray spectral and timing behaviour of a bursting Z source

1997 ◽  
Vol 287 (3) ◽  
pp. 495-514 ◽  
Author(s):  
E. Kuulkers ◽  
E. Kuulkers ◽  
M. van der Klis ◽  
T. Oosterbroek ◽  
J. van Paradijs ◽  
...  
Keyword(s):  
X Ray ◽  
Timing Behaviour

Effect of lesions of the ascending 5-hydroxytryptaminergic pathways on timing behaviour investigated with the fixed-interval peak procedure

1994 ◽  
Vol 114 (3) ◽  
pp. 463-468 ◽  
Author(s):  
G. Morrissey ◽  
M. -Y. Ho ◽  
Mary A. Wogar ◽  
C. M. Bradshaw ◽  
E. Szabadi
Keyword(s):  
Fixed Interval ◽  
Peak Procedure ◽  
Timing Behaviour

Effect of quinpirole on timing behaviour in the free-operant psychophysical procedure: evidence for the involvement of D2 dopamine receptors

2007 ◽  
Vol 193 (3) ◽  
pp. 423-436 ◽  
Author(s):  
T. H. C. Cheung ◽  
G. Bezzina ◽  
C. L. Hampson ◽  
S. Body ◽  
K. C. F. Fone ◽  
...  
Keyword(s):  
Dopamine Receptors ◽  
D2 Dopamine Receptors ◽  
Psychophysical Procedure ◽  
Free Operant ◽  
Timing Behaviour

New Findings on the Sensitivity of Free-Operant Timing Behaviour to 5-Hydroxytryptamine Receptor Stimulation

2014 ◽  
Vol 2 (2) ◽  
pp. 210-232 ◽  
Author(s):  
S. Body ◽  
T. H. C. Cheung ◽  
G. Bezzina ◽  
C. L. Hampson ◽  
K. C. F. Fone ◽  
...  
Keyword(s):  
Receptor Agonist ◽  
Weber Fraction ◽  
Receptor Stimulation ◽  
Mediated Effects ◽  
Free Operant ◽  
New Findings ◽  
Way 100635 ◽  
Timing Behaviour ◽  
Sb 242084

Timing performance maintained under the free-operant psychophysical procedure (FOPP) is sensitive to 5-hydroxytryptamine (5-HT)1A and 5-HT2A receptor stimulation. Agonists of these receptors displace the psychometric function towards shorter durations, reducing , the index of central tendency of timing. Here we report the effects of Ro-600175, a selective 5-HT2C receptor agonist, and mCPP, a 5-HT receptor agonist with high affinity for 5-HT2C receptors and lower affinity for 5-HT1A, 5-HT1B and 5-HT2A receptors, on timing behaviour. Rats were trained under the FOPP to press two levers (A and B) in 50-s trials in which reinforcers were provided intermittently for responding on A in the first half, and B in the second half of the trial. Percent responding on B (%B) was recorded in successive 5-s epochs of the trials; logistic psychometric curves were fitted to the data from each rat under each treatment condition for derivation of timing indices [ (time corresponding to %B = 50%), Weber fraction]. The rats received systemic treatment with Ro-600175, mCPP, and mCPP in combination with antagonists of 5-HT1A (WAY-100635), 5-HT1B (isamoltane), 5-HT2A (MDL-100907) or 5-HT2C (SB-242084) receptors. mCPP (2.5 mg kg−1 i.p.), but not Ro-600175 (1, 2, 4 mg kg−1 i.p.), reduced . SB-242084 (0.6 mg kg−1 i.p.) potentiated mCPP’s effect on . mCPP’s effect on was not altered by isamoltane (8.0 mg kg−1 i.p.), but was attenuated by MDL-100907 (1.0 mg kg−1 i.p.) and WAY-100635 (0.1 mg kg−1 s.c.). The results suggest that mCPP’s effect on timing is mediated by an agonistic action at 5-HT1A and 5-HT2A, but not 5-HT1B, receptors. The role of 5-HT2C receptors is unclear, in view of SB-242084’s ability to potentiate the effect of mCPP, while Ro-600175 had no effect on . The possibility is considered that 5-HT2C receptors may counteract 5-HT1A and/or 5-HT2A receptor-mediated effects on timing performance.

Tolerance to the effect of 2,5-dimethoxy-4-iodoamphetamine (DOI) on free-operant timing behaviour: interaction between behavioural and pharmacological mechanisms

2007 ◽  
Vol 192 (4) ◽  
pp. 521-535 ◽  
Author(s):  
T. H. C. Cheung ◽  
G. Bezzina ◽  
S. Body ◽  
K. C. F. Fone ◽  
C. M. Bradshaw ◽  
...  
Keyword(s):  
Free Operant ◽  
Timing Behaviour
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