Ramses D’Leon Macias

Ramses D’Leon Macias, a graduate student at Mexico’s Universidad UTEL, has carried out psi research in presentiment and psychokinesis.


Ramses D’Leon Macias is a graduate student at Mexico’s Universidad UTEL working toward a masters degree in data science. He is studying physiological anticipation and psychokinesis. He is chief researcher at Unidad Parapsicológica de Investigación, Difusión y Enseñanza, now part of the Centro de Investigación de la Sintergia y la Consciencia, which aims to become a major psi research centre in Mexico, and of which he is co-founder. He was program chair of the Parapsychological Association's 2019 international convention in Paris.

Presentiment Research

D’Leon is developing low-cost presentiment testing materials for use by researchers who would otherwise struggle to fund such activity. Despite accumulating evidence in support of presentiment effects in human physiology – termed predictive anticipatory activity (PAA) – there is still significant resistance from mainstream scientists to even consider this evidence. D’Leon conjectures that this largely relates to obstacles in the way of replicating the effects: expensive equipment, expertise and protracted statistical analyses. His goal is to develop PAA software with a high-quality design that is compatible with low-cost psychophysiological equipment, allowing testing of a wide range of stimuli.

In furtherance of this aim, in 2019 D’Leon reported the results of his own presentiment research using visual stimuli. In this double-blind experiment 39 participants were randomly exposed to images that were variously neutral or arousing, and possible anticipatory reactions observed by measuring their skin conductance and heart rate using inexpensive psychophysiological hardware and a simple exercise device. Sixteen hundred trials were carried out. Images were divided into either calm (neutral or mildly pleasant) or excitatory (erotic or violent) categories.

When D’Leon analyzed the results he found evident differences prior to the shown stimuli, both in skin conductance level and in heart rate variability, indicating a presentiment effect.

In skin conductance, a significant difference between calm and death-danger trials was found in all participants (p = 0.0418). In heart rate, a significant difference was found between calm and erotic trials in males (p = 0.0239), between calm and fearful trials in females (p = 0.0455), and between calm and ‘animal-injury’ trials in females (p=0.0384). D’Leon found stark differences in gender responses in that fear negatively reduces presentiment in females, while it aids the physiological prediction in males. The general difference between calm and excitatory images in all participants, both in skin conductance (p = 0.07) and heart rate ( p= 0.28), were non-significant, emphasizing the cancelling effect of opposite gender presentiment responses to stimuli valence.

D’Leon further explains that ‘arousal and valence, as the orienting and defence response, seem to play fundamental roles on physiological activity in the anticipation of any event, as it also happens in normal physiology studies when the stimuli are presented.’ He concludes that independent replication of previous research has been successful and paves the way for the use of inexpensive psychophysiological materials in further presentiment research, expediting dissemination to other interested research groups.1

Other Research

Additionally, D’Leon is carrying out replications of macro-PK experiments by Dullin and Jamet (involving light spinning objects),2 working with near-death experiences protocols and standardizing parapsychological scales used in Mexico.

Michael Duggan


D’Leon, R.M., Izara, N. (2019). Development of predictive anticipatory activity (PAA) software: A first step towards a medium term goal. Proceedings of the 61st annual convention of the Parapsychological Association, Petaluma, California (IONS campus).

Dullin, E & Jamet, D. (2018). A Methodology Proposal for Conducting a Macro-PK Test on Light Spinning Objects, in a Non-Confined Environment. Journal of Scientific Exploration 32/3, 514-554. https://www.researchgate.net/publication/327897642_A_Methodology_Proposal_for_Conducting_a_Macro-PK_Test_on_Light_Spinning_Objects_in_a_Non-Confined_Environment


  • 1. D’Leon and Izara (2019).
  • 2. Dullin & Jamet (2018).