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Amphetamine-induced alteration to gaze parameters: A novel conceptual pathway and implications for naturalistic behavior. Prog Neurobiol 2020; 199:101929. [PMID: 33091542 DOI: 10.1016/j.pneurobio.2020.101929] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/24/2020] [Revised: 09/03/2020] [Accepted: 10/08/2020] [Indexed: 12/25/2022]
Abstract
Amphetamine produces a multiplicity of well-documented end-order biochemical, pharmacological and biobehavioural effects. Mechanistically, amphetamine downregulates presynaptic and postsynaptic striatal monoamine (primarily dopaminergic) systems, producing alterations to key brain regions which manifest as stereotyped ridged behaviour which occurs under both acute and chronic dosing schedules and persists beyond detoxification. Despite evidence of amphetamine-induced visual attentional dysfunction, no conceptual synthesis has yet captured how characteristic pharmaco-behavioural processes are critically implicated via these pathways, nor described the potential implications for safety-sensitive behaviours. Drawing on known pathomechanisms, we propose a cross-disciplinary, novel conceptual functional system framework for delineating the biobehavioural consequences of amphetamine use on visual attentional capacity and discuss the implications for functional and behavioural outcomes. Specifically, we highlight the manifest implications for behaviours that are conceptually driven and highly dependent on visual information processing for timely execution of visually-guided movements. Following this, we highlight the potential impact on safety-sensitive, but common behaviours, such as driving a motor vehicle. The close pathophysiological relationship between oculomotor control and higher-order cognitive processes further suggests that dynamic measurement of movement related to the motion of the eye (gaze behaviour) may be a simple, effective and direct measure of behavioural performance capabilities in naturalistic settings. Consequently, we discuss the potential efficacy of ocular monitoring for the detection and monitoring of driver states for this drug user group, and potential wider application. Significance statement: We propose a novel biochemical-physiological-behavioural pathway which delineates how amphetamine use critically alters oculomotor function, visual-attentional performance and information processing capabilities. Given the manifest implications for behaviours that are conceptually driven and highly dependent on these processes, we recommend oculography as a novel means of detecting and monitoring gaze behaviours during naturalistic tasks such as driving. Real-word examination of gaze behaviour therefore present as an effective means to detect driver impairment and prevent performance degradation due to these drugs.
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Amphetamine stereotypy, the basal ganglia, and the “selection problem”. Behav Brain Res 2012; 231:297-308. [DOI: 10.1016/j.bbr.2011.11.003] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2011] [Revised: 11/01/2011] [Accepted: 11/02/2011] [Indexed: 12/28/2022]
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How does the physiology change with symptom exacerbation and remission in schizophrenia? Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00065122] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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A cardinal principle for neuropsychology, with implications for schizophrenia and mania. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00065195] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Eshkol-Wachman movement notation and the evolution of locomotor patterns in vertebrates. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00068606] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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A mobility gradient in the organization of vertebrate movement: The perception of movement through symbolic language. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00068539] [Citation(s) in RCA: 63] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
AbstractOrdinary language can prevent us from seeing the organization of whole-animal movement. This may be why the search for behavioral homologies has not been as fruitful as the founders of ethology had hoped. The Eshkol-Wachman (EW) movement notational system can reveal shared movement patterns that are undetectable in the kinds of informal verbal descriptions of the same behaviors that are in current use. Rules of organization that are common to locomotor development, agonistic and exploratory behavior, scent marking, play, and dopaminergic drug-induced stereotypies in a variety of vertebrates suggest that behavior progresses along a “mobility gradient” from immobility to increasing complexity and unpredictability. A progression in the opposite direction, with decreasing spatial complexity and increased stereotypy, occurs under the influence of the nonselective dopaminergic drugs apomorphine and amphetamine and partly also the selective dopamine agonist quinpirole. The behaviors associated with the mobility gradient appear to be mediated by a family of basal ganglia-thalamocortical circuits and their descending output stations. Because the small number of rules underlying the mobility gradient account for a large variety of behaviors, they may be related to the specific functional demands on these neurological systems. The EW system and the mobility gradient model should prove useful to ethologists and neurobiologists.
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Abstract
AbstractA model is proposed for integrating the neural and cognitive aspects of the positive symptoms of acute schizophrenia, using evidence from postmortem neuropathology and neurochemistry, clinical and preclinical studies of dopaminergic neurotransmission, anatomical connections between the limbic system and basal ganglia, attentional and other cognitive abnormalities underlying the positive symptoms of schizophrenia, specific animal models of some of these abnormalities, and previous attempts to model the cognitive functions of the septohippocampal system and the motor functions of the basal ganglia. Anatomically, the model emphasises the projections from the septohippocampal system, via the subiculum, and the amygdala to nucleus accumbens, and their interaction with the ascending dopaminergic projection to the accumbens. Psychologically, the model emphasises a failure in acute schizophrenia to integrate stored memories of past regularities of perceptual input with ongoing motor programs in the control of current perception. A number of recent experiments that offer support for the model are briefly described, including anatomical studies of limbic-striatal connections, studies in the rat of the effects of damage to these connections, and of the effects of amphetamine and neuroleptics, on the partial reinforcement extinction effect, latent inhibition and the Kamin blocking effect; and studies of the latter two phenomena in acute and chronic schizophrenics.
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A realistic model will be much more complex and will consider longitudinal neuropsychodevelopment. Behav Brain Sci 2011. [DOI: 10.1017/s0140525x00065286] [Citation(s) in RCA: 30] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Bachand KD, Guthrie KM, Wolgin DL. Expression of c-fos mRNA in the basal ganglia associated with contingent tolerance to amphetamine-induced hypophagia. Behav Brain Res 2008; 198:388-96. [PMID: 19084559 DOI: 10.1016/j.bbr.2008.11.026] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/02/2008] [Revised: 10/31/2008] [Accepted: 11/10/2008] [Indexed: 12/28/2022]
Abstract
Tolerance to the hypophagic effect of psychostimulants is contingent on having access to food while intoxicated. Rats given chronic injections of such drugs with access to food learn to suppress stereotyped movements, which interfere with feeding. In contrast, controls given the drug after food access do not learn to suppress stereotypy and, therefore, do not become tolerant. To determine the role of the basal ganglia in this phenomenon, we used in situ hybridization to measure the expression of c-fos mRNA, a marker for neural activation, in the brains of tolerant and nontolerant rats. Rats given chronic amphetamine injections prior to food access learned to suppress stereotyped movements, whereas yoked controls given the drug after feeding did not. Following an acute injection of amphetamine, both of these groups had higher levels of c-fos mRNA than saline-treated controls throughout the striatum, in the nucleus accumbens core, the ventral pallidum and layers V-VI of the motor cortex. In contrast, tolerant rats, which had learned to suppress stereotypy, had higher levels of c-fos mRNA than both amphetamine- and saline-treated controls in the entopeduncular nucleus, globus pallidus, subthalamic nucleus, pedunculopontine nucleus, nucleus accumbens shell, olfactory tubercle, somatosensory cortex, and layers II-IV of motor cortex. These data suggest that the learned suppression of amphetamine-induced stereotypy involves the activation of dorsal striatal pathways previously implicated in response selection as well as the ventral striatum, long implicated in appetitive motivation and reinforcement.
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Affiliation(s)
- Kimberlee D Bachand
- Department of Psychology, Florida Atlantic University, Boca Raton, FL 33431-0991, United States
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GABA in the deep layers of the superior Colliculus/Mesencephalic reticular formation mediates the enhancement of startle by the dopamine D1 receptor agonist SKF 82958 in rats. J Neurosci 2000. [PMID: 10884322 DOI: 10.1523/jneurosci.20-14-05374.2000] [Citation(s) in RCA: 24] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
GABA transmission in the deep layers of the superior colliculus/deep mesencephalic reticular formation (deep SC/Me) mediates several motor responses, including those expressed after systemic administration of dopamine agonists. In the present study we examined the role of the deep SC/Me in the modulation of the acoustic startle reflex and its enhancement by the dopamine D(1) agonist SKF 82958. Rats were implanted with bilateral cannulas into the deep SC/Me or superficial layers of the SC (super SC) and 1 week later were infused with various compounds. The GABA(A) antagonist bicuculline (0, 5, and 10 ng) produced a dose- and time-dependent enhancement of startle after infusion into the deep SC/Me, but not the super SC. Infusion of the GABA(A) agonist muscimol (0.1 microg) into the deep SC/Me, but not the super SC, blocked the enhancement of startle by systemic SKF 82958 (1 mg/kg) but had no effect on baseline startle by itself. This effect was not produced by infusion of the D(1) antagonist SCH 23390(1 microg) or the glutamate antagonist NBQX (0.1 microg). Deposits of FluoroGold into the deep SC/Me, combined with immunohistochemistry for glutamic acid decarboxylase (GAD), confirmed a direct GABAergic input from the substantia nigra pars reticulata (SNr) to the deep SC/Me. These results suggest that GABA tone in the deep SC/Me modulates the expression of startle as well as the enhancement of startle by dopamine D(1) agonists. On the basis of these data and previous work, we have proposed a striatonigral-tectal-reticular neural pathway mediating the effects of dopamine D(1) agonists on startle.
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Ohmori T, Abekawa T, Ito K, Koyama T. Context determines the type of sensitized behaviour: a brief review and a hypothesis on the role of environment in behavioural sensitization. Behav Pharmacol 2000; 11:211-21. [PMID: 11103876 DOI: 10.1097/00008877-200006000-00005] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
Behavioural sensitization to psychostimulants may develop context-dependency in certain circumstances. Animals given a stimulant repeatedly in a test cage but not in other environments may show enhanced drug-induced behaviour in the test cage. Conditioning mechanisms have been claimed to be responsible for these phenomena. However, several recent findings are not properly accounted for by conditioning. In addition, growing evidence supports the hypothesis that behavioural sensitization reflects neural changes induced by repeated exposure to psychostimulants (the pharmacological hypothesis). However, the pharmacological hypothesis itself fails to account for environmental influences. In this paper, we propose a hypothesis on the role of environment that is complementary to the pharmacological hypothesis. According to our hypothesis, environment does not have a causal role in the development of sensitization, but it modifies the mode of expression of the sensitized behaviour. Sensitization primarily reflects a neuroadaptive change induced by repeated exposure of the neural system to psychostimulants. However, psychostimulants are known to induce different behaviours in different environments. Therefore, repeated administration of a psychostimulant in different environments would result in augmentation of different behaviours. Our hypothesis potentially accommodates various previous observations. We briefly review the literature and present our hypothesis.
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Affiliation(s)
- T Ohmori
- Department of Neuropsychiatry, The University of Tokushima School of Medicine, Japan.
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Sinnamon HM, Karvosky ME, Ilch CP. Locomotion and head scanning initiated by hypothalamic stimulation are inversely related. Behav Brain Res 1999; 99:219-29. [PMID: 10512588 DOI: 10.1016/s0166-4328(98)00106-5] [Citation(s) in RCA: 26] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/17/2022]
Abstract
Stimulation in the hypothalamus elicits locomotor stepping. Before stepping is initiated, head scanning movements occur. We determined the relationships between the latency of locomotor initiation and the number, extent and direction of the head scanning movements. Chronic stimulation electrodes were stereotaxically implanted in and around the hypothalamus of 29 rats. Under awake conditions, 38 locomotor sites were tested in a runway apparatus. Behaviors occurring between the onset of stimulation and the first step were recorded on videotape. Points on the rat were digitized at sampling rate of 6 Hz to produce measures of head angles in the vertical, horizontal, and sagittal planes. The priming paradigm was used with a current selected for each site that was minimally sufficient to produce reliable stepping. In trials at approximately 1-min intervals, a 5-s train of stimulation (the control) was followed by a second train (the test) delivered 5-20 s later. Initiation latency on control trains was strongly correlated with head movement measures. Vertical and lateral head movements were independent of one another. Together, their frequency and extent accounted for 85% of the variance in locomotor initiation latencies. In effective priming trials, when locomotor initiation latencies were reduced on the test train, the frequency and extent of vertical and lateral head movements were also reduced. In non-effective priming trials, when latencies were not reduced, head movements were not reduced. Head scanning and locomotor initiation reflect reciprocal processes.
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Affiliation(s)
- H M Sinnamon
- Neuroscience and Behavior Program, Wesleyan University, Middletown, CT 06459-0408, USA.
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Abstract
Rhythmic behaviors like mastication, gnawing, and locomotion, are characterized by temporal segmentation or intermittency. That is, they frequently occur as a series of short bursts interrupted by pauses rather than as one long uninterrupted burst. The function of intermittency as well as the mechanisms that produce it are unknown. Biogenic amine systems may play a role in producing intermittency; however, experimental work to confirm this is only in its infancy. The current study evaluates the structure of intermittency associated with mastication and apomorphine-induced gnawing in the guinea pig. Thirteen free-roaming animals were videotaped while masticating or gnawing. Eight animals were given 0.5 mg/kg i.m. apomorphine and videotaped while gnawing. The remaining five animals received no apomorphine injections, but were taped while feeding on alfalfa pellets. Custom software was used to score instances of maximum jaw closures in videotaped mastication and gnawing sequences. The time between successive maximum jaw closures, called the interocclude interval (IOI), was calculated for all scored sequences. A cutoff IOI value of 0.26 s differentiated pauses (IOI values equal or greater than 0.26 s) from chews or gnaws (IOI values less than 0.26 s). Two or more successive chews or gnaws, without intervening pauses, defined behavior bursts. Chew, gnaw, and burst durations were quantified and compared. Chew and gnaw durations were similar. However, chewing bursts were significantly longer than gnawing bursts. The significance of these results is presented in light of previous neurophysiological work on rhythmic jaw movements and intermittency.
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Affiliation(s)
- G E Gerstner
- Department of Biologic and Materials Sciences, University of Michigan School of Dentistry, Ann Arbor 48109-1078, USA.
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Inglis WL, Allen LF, Whitelaw RB, Latimer MP, Brace HM, Winn P. An investigation into the role of the pedunculopontine tegmental nucleus in the mediation of locomotion and orofacial stereotypy induced by d-amphetamine and apomorphine in the rat. Neuroscience 1994; 58:817-33. [PMID: 8190259 DOI: 10.1016/0306-4522(94)90459-6] [Citation(s) in RCA: 63] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/29/2023]
Abstract
As the pedunculopontine tegmental nucleus has an important anatomical position as an output station for the striatum, its role in the mediation of behaviour stimulated by d-amphetamine and apomorphine was investigated. Bilateral ibotenate lesions were made in either the pedunculopontine tegmental nucleus or, as a control, in the adjacent deep mesencephalic nucleus; sham lesions were made using phosphate buffer. Over the 14 days after surgery there were no significant differences in the rats' body weight or food intake. Deep mesencephalic lesioned rats spilled more food and drank more water (never more than 5 ml more) than controls or pedunculopontine tegmental lesioned rats. Spontaneous locomotion and that elicited by d-amphetamine or apomorphine were not affected by ibotenate lesions of either the pedunculopontine tegmental nucleus or deep mesencephalic nucleus. At higher doses of d-amphetamine and apomorphine, however, excessive biting and licking were observed in the pedunculopontine tegmental nucleus, but not deep mesencephalic nucleus, lesioned rats. Such orofacial stereotypies are never observed in normal rats after systemic injection of d-amphetamine. Post mortem analysis showed that ibotenate lesions of the pedunculopontine tegmental nucleus had destroyed cholinergic and non-cholinergic neurons there but had left the deep mesencephalic nucleus intact; ibotenate lesions of the deep mesencephalic nucleus destroyed neurons in that structure but not the pedunculopontine tegmental nucleus. These data demonstrate that lesions in the pedunculopontine tegmental nucleus and deep mesencephalic nucleus have different effects, measured histologically and behaviourally; that neither spontaneous locomotion nor that stimulated by d-amphetamine or apomorphine is dependent on the integrity of the pedunculopontine tegmental nucleus; and that the pedunculopontine tegmental nucleus plays an important role in mediating orofacial activity stimulated by these drugs. The data are discussed in terms of their implications for understanding outflow from the caudate-putamen and nucleus accumbens.
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Affiliation(s)
- W L Inglis
- School of Psychology, University of St Andrews, Fife, U.K
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Supko DE, Wallace LJ. AMPA glutamate receptor activation in the posterior zona incerta inhibits amphetamine- and apomorphine-induced stereotypy. Brain Res 1992; 584:213-8. [PMID: 1381265 DOI: 10.1016/0006-8993(92)90897-i] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/26/2022]
Abstract
Previous work demonstrated that alpha-amino-3-hydroxy-5-methyl-4-isoxazole propionic acid (AMPA) glutamate receptor antagonism in the zona incerta (ZI) dorsal to the subthalamic nucleus inhibits stereotypy in rats. The current investigation was undertaken to determine if AMPA receptors in a more caudal portion of the ZI have a role in the expression of stereotyped behavior. Rats were injected bilaterally with AMPA into the posterior ZI dorsal to the substantia nigra, and immediately given a systemic injection of d-amphetamine (10 mg/kg, s.c.) or apomorphine (1 mg/kg s.c.). AMPA produced a dose-dependent inhibition of stereotypy induced by both drugs which was prevented by the coadministration of the AMPA/kainic acid antagonist, 6,7-dinitroquinoxaline-2,3-dione (DNQX) (0.5 microgram/0.5 microliter). A dose of AMPA as low as 62.5 ng completely abolished the oral component of stereotypy induced by both apomorphine and amphetamine. This dose of AMPA alone had no significant effect on spontaneous locomotor activity but enhanced the locomotor response stimulated by amphetamine (10 mg/kg, s.c.) due to an inhibition of stereotypy. The finding that activation of AMPA receptors in the posterior ZI inhibits stereotypy shows a contrast to results in the neighboring medial ZI dorsal to the subthalamic nucleus, where blockade of AMPA/kainic acid glutamate receptors with DNQX inhibits stereotypy.
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Affiliation(s)
- D E Supko
- College of Pharmacy, Ohio State University, Columbus 43210
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Joint torque precedes the kinematic end result. Behav Brain Sci 1992. [DOI: 10.1017/s0140525x00068709] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Testing for controlled variables. Behav Brain Sci 1992. [DOI: 10.1017/s0140525x00068746] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Somewhere in time – temporal factors in vertebrate movement analysis. Behav Brain Sci 1992. [DOI: 10.1017/s0140525x00068692] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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Describing behavior: A new label for an old wine? Behav Brain Sci 1992. [DOI: 10.1017/s0140525x0006876x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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From psychopharmacology to neuropsychopharmacology: Adapting behavioral terminology to neural events. Behav Brain Sci 1992. [DOI: 10.1017/s0140525x00068758] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Shapes of behaviour. Behav Brain Sci 1992. [DOI: 10.1017/s0140525x00068667] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
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