Alejandro Leon

Universidad Veracruzana | UV · Centro de Estudios e Investigaciones en Conocimiento y Aprendizaje Humano (CEICAH)

We evaluated the effects of varying temporal and spatial parameters on behavioral transitions within a water-seeking situation. Subjects were 8 experimentally-naïve male Wistar rats divided into 2 groups of 4 rats. For both groups, 2 independent schedules of water delivery were simultaneously available in two different locations of the experimental...

Currently, there are different programs that allow recording locomotion data through video-tracking systems. Nonetheless, open-access applications for the analysis of data obtained with those programs are scarce or limited. We describe a software designed for the analysis of tracking data obtained with different organisms in experimental arenas, th...

Currently, there are different programs that allow recording locomotion data through video-tracking systems. Nonetheless, open-access applications for the analysis of data obtained with those programs are scarce or limited. We describe a software designed for the analysis of tracking data obtained with different organisms in experimental arenas. In...

It has been reported in non-contingent schedules that the variety of patterns of behavior is affected by the temporal variation of water deliveries. While temporal variation is accomplished by delivering water at fixed or variable times, spatial variation is usually accomplished by varying the number of dispensers and distance among them. Such crit...

This editorial is a proposal and an open invitation to participate in the novel multidisciplinary approach of experimental behavior analysis (EBA) with artificial intelligence (AI) and mechatronics (MT), which could be called computational-experimental analysis of behavior (CEAB), and its purpose is to motivate Latin American researchers to make co...

In the present study, the spatiotemporal dynamics (derived from locomotion measures and response rates) between healthy and Vestibular Syndrome (VS) Wistar rats were compared. Four water-deprived subjects were exposed to 30 sessions of a Fixed Ratio (RF) 1 schedule in a standard operant chamber. Two subjects were healthy rats and two subjects prese...

In the present study, the spatiotemporal dynamics (derived from locomotion measures and response rates) between healthy and Vestibular Syndrome (VS) Wistar rats were compared. Four water-deprived subjects were exposed to 30 sessions of a Fixed Ratio (RF) 1 schedule in a standard operant chamber. Two subjects were healthy rats and two subjects prese...

Previous studies have reported that gregarious vs. individual-task presentation affects spatial behavior in a food-searching task. Also, it has been reported that individual vs. gregarious-housing conditions affects this dimension of behavior. The effect of task presentation and housing conditions on spatial behavior is less know. The present study...

This editorial is a proposal and an open invitation to participate in the novel multidisciplinary approach of experimental behavior analysis (EBA) with artificial intelligence (AI) and mechatronics (MT), which could be called computational-experimental analysis of behavior (CEAB), and its purpose is to motivate Latin American researchers to make co...

Studies that have used the paradigm of spatial orientation and its procedural variations have reported conflicting results regarding the effect of variations in surface distinctiveness (homogeneous vs. heterogeneous) of the environment on the differentiation of space in infants under nine months. These studies have been characterized by measures fo...

This poster shows some results of our work on the effects of food and water deprivation on the spatiotemporal organization of behavior of wistar rats under a 30s fixed-time concurrent food and water delivery schedule.

This poster shows some results of our work on the effects of food and water deprivation on the spatiotemporal organization of behavior of wistar rats under a 30s fixed-time concurrent food and water delivery schedule.

A paradigm of stimuli schedule contingent on the spatial dimension of the organism's activity is presented. The behavioral dynamic was analyzed on a water-delivery temporospatial schedule contingent on the organism's location with an acoustic signal in rats. The experimental space was segmented in two (DS and ΔS zones). Every segment was associated...

In studies developed under the Conditioned Place Preference paradigm (CPP), an aversive event, generally an arbitrary stimulus (i.e., electric shock/drug), is presented in one segment of the experimental arena, and the emergent place preference is evaluated. In such studies: 1) the intensity and sudden presentation of the stimulus produce high leve...

Understanding behavioral systems as emergent systems comprising the environment and organism subsystems, include spatial dynamics as a primary dimension in natural settings. Nevertheless, under the standard approaches, the experimental analysis of behavior is based on the single response paradigm and the temporal distribution of discrete responses....

The spatiotemporal dynamics of behavior based on derived measures of rats locomotion and response rate were compared in healthy-Wistar rats and rats with Vestibular Syndrome (VS) under a continuous schedule of reinforcement (RF1) of water delivery. Four water-deprived subjects were exposed to 30 sessions of an RF1 schedule in a standard operant cha...

The continuous analysis of spatial behavioral-dynamics under stimuli-schedules has been a scarcely studied field in experimental psychology. A recent study conducted in our laboratory suggest that the features embedded in the spatial dynamics of behavior are affected by stimulus-schedules, at least, as much as features embedded in discrete response...

The most extensively employed paradigm for the analysis of relational behavior is the transposition task. Nevertheless, it has two important limitations for its use in humans. The first one is the "ceiling effect" reported in linguistic participants. The second limitation is that the standard transposition task, being a simple choice task between t...

We analyze behavioral dynamics under Spatial Contingent Schedule based on the organism's location (SPSL) and compare the emergent behavioral dynamics in SPCL under different signaled conditions of stimulus. A Modified Open Field System was segmented in two zones; on each segment, a fixed-time schedule (FT-15") was presented but only when the organi...

Previous studies have reported that the behavioral dynamics of a rat exposed to group foraging situations is different to the one observed when rats are individually tested. In general, in group situations, subjects decrease their feeding time and increase the traveled distance. In the present study, we evaluated the effects of presenting two femal...

We compare the spatiotemporal dynamics of behavior between healthy rats and rats with vestibular syndrome using a novel reinforcement schedule in a modified open field system (MOFS). In this novel schedule, the reinforcement (water delivery) depends on the organism’s locomotor activity (traveled distance). The behavioral dynamics were markedly diff...

In natural settings, the spatial dimension of behavior, such as approach and withdrawal patterns to relevant stimuli (e.g., food, water or predators) are crucial. Nevertheless, the spatial-behavioral dynamics has been a scarcely studied field in Experimental Psychology. Recent studies using computer vision for sensing spatial behavior have shown, i...

RbDT software was designed to allow the integration and continuous analysis of active behavioral patterns in the emergence of relational behavior in humans. The paradigm consists of a challenging task based on transposition in which the participant must forms stimuli compounds with a given relational criterion (more/less than). This is only the RbD...

The most extensively paradigm employed for the analysis of relational behavior is the transposition task. Nevertheless, It has two important limitations for its use in humans. The first one is the "ceiling effect" reported in linguistic participants. The second limitation is that the standard transposition task, being a simple choice task between t...

The effects of food or water deprivation on the consumption of those commodities has been extensively reported in the literature. The effect of the interaction of those deprivation conditions on food and water consumption and on the temporal organization and dynamics of behavior is less known. In this study, we evaluated the effects of different co...

We present the mathematical description of the following measures and plots: smoothed distance; recurrence plots; entropy and divergence. Supplementary Material of Ecological location of a water source and spatial dynamics of behavior under temporally scheduled water deliveries in a modified open-field system: An integrative approach.

Relational behavior defined as the establishment of relational properties from absolute attributes of objects, has been studied from different theoretical perspectives, one of them is Theory of Psychology (TP). In TP, relational behavior was conceptualized as the Functional Contact of Comparison, which refers to the formation of interrelationships...

Relational behavior defined as the establishment of relational properties from absolute attributes of objects, has been studied from different theoretical perspectives, one of them is Theory of Psychology (TP). In TP, relational behavior was conceptualized as the Functional Contact of Comparison, which refers to the formation of interrelationships...

4 0 | l a p a l a b r a y e l h o m b r e , v e r a n o , 2 0 2 0 La presente entrevista se realizó por videoconferencia en mayo de 2020, durante un momento álgido de la pandemia, dentro de un marco alternativo a las perspectivas dominantes de entonces, que enfocaban la pandemia Covid-19 con la lente estrictamente sanitaria.

Se ha reportado que el alojamiento individual vs gregario tiene efectos diferenciales sobre el comportamiento espacial en tareas de búsqueda de alimento (TBA). El presente estudio evaluó el efecto de la exposición temprana a alojamiento individual vs gregario sobre el comportamiento espacial en dos TBA (individual vs diádica) y bajo dos tipos de ac...

Currently, there are different programs that allow recording locomotion data through video-tracking systems. Nonetheless, open-access applications for the analysis of data obtained with those programs are scarce or limited. We describe a software designed for the analysis of tracking data obtained with different organisms in experimental arenas. In...

El presente texto fue preparado inicialmente por invitación de Emilio Ribes, en el marco de la primera presentación de su libro 'El estudio científico de la conducta individual'. Fue incluido por iniciativa de Víctor Alcaraz en el volumen, coordinado por él y editado por la Universidad Veracruzana, en homenaje a Emilio Ribes.

Se contrastaron los efectos de tres condiciones de entrenamiento (Lingüístico Explícito, Interferente Lingüístico y Condición Estándar) sobre la dominancia funcional de cualidades perceptuales (color y forma-tipografía-) o cualidades convencionales (aritméticas) en una tarea modificada de igualación de la muestra de segundo orden. Se utilizó un dis...

This study evaluated the functional role of behavioral patterns in relational behavior in humans. The participants were five children, 9 to 11 years-old. A modified transposition task (size) was used, requiring active comparison patterns in order to match two relational stimulus compounds with two sample stimulus compounds. Comparison patterns were...

The transposition phenomenon - like selector behavior and functional comparison contact - refers to the ability to recognize and respond to functional relationships between stimuli. This type of contact has been studied based on the so-called Transposition Tasks (TT) within the framework of Gestalt psychology and based on the Sample Matching Tasks...

The project is structured as a proposal for the study of relational behavior in dogs (canis familiaris) from a comparative perspective. The work is based on the conceptual framework of Ribes' general psychological theory, in its 2018 update, where relational behavior can be understood as a fundamental characteristic of the so-called comparison cont...

El análisis psicológicos del comportamiento humano, en el contexto de las propuestas de Ribes y López (1985) y Ribes (2018), se ha realizado fundamentalmente empleando paradigmas o ejemplares metodológicos que no son representativos de ningún dominio práctico o social relevante. En este contexto, si bien se asume que el comportamiento humano tiene...

- Se realiza una revisión crítica sobre la distinción reactivo-activo en los modos lingüísticos. - Se revisa críticamente la distinción modos lingüísticos vs modos no lingüísticos. - Se introduce el concepto de patrones actuativos para tomar distancia del concepto actividad-reactividad. Limitaciones. - Desarrollo de análisis y representaciones de...

We evaluated the effects of varying temporal and spatial parameters on behavioral transitions within a water-seeking situation. Subjects were 8 experimentally-naïve male Wistar rats divided into 2 groups of 4 rats. For both groups, 2 independent schedules of water delivery were simultaneously available in two different locations of the experimental...

Studies on conditional discrimination (CD) in humans have pointed out that linguistic contact with the properties and criteria of the task is critical both for acquisition and transfer, especially in extra-relational and extra-dimensional tests. Recent empirical and conceptual analyses have challenged this assumption. Studies in the field have gene...

En el estudio de la discriminación condicional en humanos, utilizando Tareas de Igualación de la Muestra (TIM), se ha sostenido que el reconocimiento lingüístico de las propiedades y relaciones implicadas en la tarea es un factor crítico para el desempeño exitoso en el entrenamiento, y aún más en situaciones de transferencia. También se han señalad...

This study examined the effect of four contact modes (direct, morphology, linguistic, observational, and direct plus description) on the acquisition and transfer of conditional discrimination and the emergence of rules. Sixteen experimentally naive university students, aged between 18 and 21 years, participated in the study. A within-subject design...

Se sostiene que los “enigmas” que hasta hoy rodean al concepto “pensamiento” son producto de una profunda incomprensión conceptual derivada de no distinguir entre preguntas filosóficas y problemas científicos. Se señala que tal incomprensión tiene lugar al no reconocer la naturaleza multívoca y contextual de los términos en el lenguaje ordinario vs...

The present study evaluated the effects of varying the criterion and the morphology of the percentage of correct response upon reading adjustment tasks. Participants were 20 voluntary students, distributed in four groups, which were differentiated by the certainty - variability of the criterion and the certainty - variability of the morphology of r...

p class="MsoNormal" style="line-height: 150%; margin: 0cm 0cm 0pt;"> Se sostiene que los “enigmas” que hasta hoy rodean al concepto “pensamiento” son producto de una profunda incomprensión conceptual derivada de no distinguir entre preguntas filosóficas y problemas científicos. Se señala que tal incomprensión tiene lugar al no reconocer la naturale...

This study evaluated the effects of training for satisfying congruence criteria in reading adjustment tasks on the performance of university students according to congruence and coherence criteria. The experimental group was trained to satisfy congruence criteria and then exposed to two congruence and coherence criteria evaluation tests. The contro...

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