CN109946833A - Three-dimensional display device for non-human primates - Google Patents

Abstract

The invention discloses a kind of non-human primate three-dimensional display apparatus, comprising: frame, optical lens, display panel, control mainboard and head fixed band；Display panel, control mainboard and optical lens are fixedly installed in frame, and optical lens is two, and display panel is located at optical lens rear, and control mainboard is located at display panel rear, and display panel, control mainboard and optical lens form three-dimensional display system；The lateral dimension of frame is no more than the distance between non-human primate ears to be tested, and the longitudinal size of frame is no more than the distance between non-human primate volume nose to be tested；Head fixed band is connected to outside frame, for frame to be fixed on to the head of the non-human primate to be tested.The present invention provides one kind to carry out three-dimensional display apparatus used in 3D vision stimulation test for non-human primate.

Description

Three-dimensional display device for non-human primates

technical field

Embodiments of the present invention relate to three-dimensional display technology, and in particular, to a three-dimensional display device for non-human primates.

Background technique

The brain is the organ with the most complex structure in the organism, the highest part of the nervous system, the organ of biological thinking, and it dominates all the activities in the organism. In order to explore the mysteries of the brain, medical scientists and biologists have never stopped researching the brain. Brain research is of great significance for the development of artificial intelligence and the treatment of human brain diseases.

Since the brains of non-human primates such as monkeys and orangutans are very similar to those of humans, non-human primates are generally used as objects for experiments on brain networks. Among them, cranial nerve perception is an experiment that studies the brain's response to different external stimuli, and is used to study the working mechanism of the brain network. It is an important experiment to study the working principle of the brain. The important experiments in the study of brain network include brain nerve perception experiment. The most direct brain nerve perception experiment is to visually stimulate experimental animals, and respond to the stimulated animals, as well as the bioelectric signals and biochemical signals of the brain nerve network. carry out testing.

Since the activity state of the non-human primates participating in the experiment is unpredictable, it is difficult to ensure that the non-human primates continue to watch the visual stimulus when visual stimulation is performed on the non-human primate, resulting in low experimental efficiency.

SUMMARY OF THE INVENTION

The invention provides a three-dimensional display device for non-human primates, which can be used for non-human primates to perform three-dimensional visual stimulation experiments, and provides good equipment support for brain network research.

In a first aspect, an embodiment of the present invention provides a three-dimensional display device for non-human primates, including: a frame, an optical lens, a display panel, a control main board, and a head fixing belt;

The display panel, the control mainboard and the optical lens are fixedly installed in the frame, the optical lenses are two, the display panel is located behind the optical lens, and the control mainboard is located in the display panel At the rear, the display panel, the control main board and the optical lens form a three-dimensional display system;

The lateral dimension of the frame is not greater than the distance between the ears of the non-human primate to be tested, and the longitudinal dimension of the frame is not greater than the distance between the forehead and nose of the non-human primate to be tested;

The head fixing strap is connected outside the frame, and is used for fixing the frame on the head of the non-human primate to be tested.

In a possible implementation manner of the first aspect, the three-dimensional display device for non-human primates further includes an eye tracker, the eye tracker is installed in the frame, and the eye tracker uses For tracking the eye movement of the non-human primate wearing the three-dimensional display device.

In a possible implementation manner of the first aspect, there are two eye trackers, which are respectively installed above the two optical lenses.

In a possible implementation manner of the first aspect, the eye tracker is a miniature eye tracker.

In a possible implementation manner of the first aspect, the head fixing belt includes a transverse fixing belt and a longitudinal fixing belt;

The transverse fixing belt is connected to the transverse ends of the frame, one end of the longitudinal fixing belt is connected to the upper part of the frame, and the other end of the longitudinal fixing belt is connected to the middle of the transverse fixing belt.

In a possible implementation manner of the first aspect, the lengths of the transverse fixing band and the longitudinal fixing band are adjustable.

In a possible implementation manner of the first aspect, the thickness of the optical lens is less than a preset threshold.

In a possible implementation manner of the first aspect, an interpupillary distance adjusting device is included between the two optical lenses, and the interpupillary distance adjusting device is used to adjust the distance between the two optical lenses.

In a possible implementation manner of the first aspect, the center-to-center distance between the two optical lenses is between 41 and 51 millimeters.

In a possible implementation manner of the first aspect, the lateral dimension of the frame is between 115 and 125 millimeters, and the longitudinal dimension of the frame is between 32 and 42 millimeters.

In the three-dimensional display device for non-human primates provided by the embodiments of the present invention, by installing the optical lens and the display panel in a frame whose size is not greater than the distance between the ears of the non-human primate and the distance between the forehead and nose, In addition, the frame is connected with a head fixing belt for fixing, a three-dimensional display device that can be used for three-dimensional visual stimulation experiments for non-human primates is provided, and good equipment support is provided for brain network research.

Description of drawings

1 is a schematic structural diagram of Embodiment 1 of a three-dimensional display device for non-human primates provided by an embodiment of the present invention;

2 is a schematic structural diagram of Embodiment 2 of a three-dimensional display device for non-human primates provided by an embodiment of the present invention;

FIG. 3 is a schematic structural diagram of Embodiment 3 of the three-dimensional display device for non-human primates provided by the embodiment of the present invention.

Detailed ways

The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, the drawings only show some but not all structures related to the present invention.

For the study of brain network activity, it is necessary to apply external stimuli to living organisms, and then record the activities of the brain network corresponding to different external stimuli, and find the corresponding relationship between different external stimuli and brain network activities, so as to reveal the working principle of the brain network. When conducting experiments on brain neural network activities, external stimuli generally use visual stimuli, because visual stimuli are more intuitive and varied, and the stimulation to non-human primates is obvious. But at present, two-dimensional pictures are generally used to visually stimulate non-human primates, and the activities of the brain neural network are recorded, that is, monkeys and other non-human primates are shown different pictures, and then the monkeys are tested. Correlated biological neural signal changes in brain networks. However, there is still a gap between two-dimensional pictures and objects in the natural environment. The experimental results obtained by the current brain network experiments cannot well reflect the working principle of the brain network.

The embodiment of the present invention provides a three-dimensional display device for non-human primates, which converts the visual stimulation of the non-human primate brain network activity experiment from two-dimensional pictures to three-dimensional stimulation, thereby better simulating the natural environment The visual stimuli of the natural environment can be obtained by the brain network, so as to better reveal the working principle of the brain network.

FIG. 1 is a schematic structural diagram of Embodiment 1 of a three-dimensional display device for non-human primates provided by an embodiment of the present invention. As shown in FIG. 1 , the experimental system provided by this embodiment includes: a frame 11 , an optical lens 12 , and a display panel 13. The control board (not shown in the figure) and the head fixing belt 14.

The optical lens 12 , the display panel 13 and the control mainboard are fixedly installed in the frame 11 . There are two optical lenses 12, corresponding to the eyes of the non-human primate to be tested. The display panel 13 is located behind the optical lens 12, and the control board is located behind the display panel 13, that is, the optical lens 12, the display panel 13 and the control board are sequentially arranged from the eyes of the experimental animal wearing the three-dimensional display device. The control board, the display panel 13 and the optical lens 12 form a three-dimensional display system.

The three-dimensional display system composed of the control main board, the display panel 13 and the optical lens 12 can be any of the known three-dimensional display systems. Among them, the control panel is used to control the display panel 13 to display the content to be displayed, and the three-dimensional visual stimulus can be observed through the optical lens 12 through the optical lens 12 with different refractive indices or different colors; or in some three-dimensional display systems, control the The panel is also used to control the display panel 13 and the optical lens 12 at the same time, and the display and action of the display panel 13 and the optical lens 12 cooperate to realize the display of three-dimensional visual stimulation. A three-dimensional display system composed of a control board, a display panel, and an optical lens has been widely researched and applied, and will not be repeated in the embodiments of the present invention. In a word, by displaying the three-dimensional picture or video to be displayed on the display panel 13, the experimental animal wearing the three-dimensional display device for non-human primates provided in this embodiment can view the three-dimensional picture or video through the optical lens 12. , so as to produce three-dimensional visual stimuli for experimental animals.

Since the three-dimensional display devices in the prior art are all designed for human beings, no matter their size or function, they are designed according to the biological characteristics of the human body and are matched with human beings. Since the head structure of non-human primates is different from that of humans, the three-dimensional display device for non-human primates provided in this embodiment needs to be designed according to the characteristics of non-human primates. After studying the head structure of non-human primates, such as monkeys, it was found that the distance between the ears of non-human primates is shorter and the ears are softer, and the frontal nose of non-human primates The distance between them is short, the nasal bones are wide and low, and the overall size of the non-human primate head is smaller than that of a human head. According to the above characteristics, it can be found that, due to the soft ears and low nasal bones of non-human primates, they cannot carry a three-dimensional display device similar to the structure of glasses like humans. In order for the non-human primate to view stable three-dimensional visual stimulation, the three-dimensional display device needs to be stably worn on its head, so other wearing methods need to be used.

In this embodiment, the head fixing belt 14 is used for fixing, and the head fixing belt 14 is connected outside the frame 11 to fix the frame 11 on the head of the non-human primate to be tested, and after fixing, so that The two optical lenses 12 are respectively aimed at the eyes of the non-human primate. The head restraint belt 14 can be made of any material, such as metal material, plastic material or cloth material. As long as the head restraint belt 14 is wrapped around the head of the non-human primate, the three-dimensional display device can be stably mounted. worn on its head. However, considering the wearing comfort and weight, cloth materials can be selected.

Further, in order to ensure the stable fixation of the head fixing belt 14 , as shown in FIG. 1 , the head fixing belt 14 may include a transverse fixing belt 21 and a longitudinal fixing belt 22 . The lateral fixing straps 21 are connected to both lateral ends of the frame 11 , that is, the lateral fixing straps 21 are used to surround the head of the non-human primate wearing the three-dimensional display device. One end of the vertical fixing band 22 is connected to the upper part of the frame 11 , and the other end is connected to the middle of the horizontal fixing band 21 , that is, the vertical fixing band 22 fixes the three-dimensional display device from the top of the head. The head fixing belt 14 arranged in this way can stably wear the three-dimensional display device on the head of the non-human primate.

In addition, during the three-dimensional visual stimulation experiment, there are many non-human primates participating in the experiment, and the head size of each animal is different. Therefore, in order to make the three-dimensional display device can be stably fixed on each animal For the head, the length of the head strap 14 is adjustable to suit experimental animals with different head sizes. That is to say, the lengths of the lateral fixing straps 21 and the longitudinal fixing straps 22 are adjustable, which is also convenient for the experimental animals to wear the three-dimensional display device. When wearing, the lengths of the horizontal fixing belt 21 and the vertical fixing belt 22 can be adjusted to be longer than the head size of the experimental animal. When wearing the three-dimensional display device for the experimental animal, align the optical lens 12 with the experimental animal After eyes are fixed, first tighten the length of the transverse fixing belt 21, and then tighten the length of the longitudinal fixing belt 22, so that the lengths of the transverse fixing belt 21 and the length of the longitudinal fixing belt 22 match the head size of the experimental animal.

In addition, in order to enable the experimental animals to wear the 3D display device comfortably and avoid the impact on the experimental animals due to wearing discomfort and the results of the 3D visual stimulation experiment, the 3D display device needs to be worn away from non-human primates. other facial organs of animals. Also, due to the small head of non-human primates, they cannot bear excessive weight. Therefore, the lateral dimension of the frame 11 needs to be no greater than the distance between the ears of the non-human primate to be tested, and the longitudinal dimension is not greater than the distance between the foreheads and noses of the non-human primate to be tested. After a study of the head dimensions of a large number of non-human primates, it was determined that the frame 11 should have a lateral dimension between 115-125 mm and a longitudinal dimension between 32-42 mm.

In the three-dimensional display device for non-human primates provided by this embodiment, the optical lens and the display panel are installed in a frame whose size is not greater than the distance between the ears and the distance between the front and nose of the non-human primate, and A three-dimensional display device that can be used for a three-dimensional visual stimulation experiment for non-human primates is provided for connecting the frame with a fixed head strap, which provides a good equipment support for brain network research.

FIG. 2 is a schematic structural diagram of Embodiment 2 of the three-dimensional display device for non-human primates provided by the embodiment of the present invention. As shown in FIG. 2 , the experimental system provided by this embodiment, on the basis of FIG. 1 , further includes: Motion Tracker 15.

The eye tracker 15 is installed in the frame 11 for tracking the eye movement of the non-human primate wearing the three-dimensional display device.

When performing three-dimensional visual stimulation experiments on non-human primates, it is necessary to provide three-dimensional visual stimulation to the experimental animals, and record various physiological responses and biological signals of the experimental animals. But only after confirming that the experimental animals are correctly viewing the three-dimensional visual stimuli provided, the various data recorded have research value. Then, after providing the three-dimensional visual stimulation to the experimental animal, it is necessary to confirm that the experimental animal has correctly viewed the three-dimensional visual stimulation, which requires tracking the eye movement trajectory of the experimental animal to determine whether the eye gaze position of the experimental animal is a three-dimensional visual stimulation. Display location.

The eye tracker 15 is a device capable of tracking the eye movement trajectory. It is composed of a high-precision camera and a series of image processing and judging devices. It can capture the image of the eye, determine the position of the eye gaze, and complete the eye movement tracking.

After the eye tracker 15 is added to the three-dimensional display device, the three-dimensional visual stimulation can be correctly provided to the experimental animal. For example, the display panel 13 displays the three-dimensional vision only when the eye tracker 15 determines that the experimental animal is looking at a specific position. stimuli, or the display panel 13 displays three-dimensional visual stimuli on the experimental animal's eye movement track tracked by the eye tracker 15 .

There are generally two eye trackers 15 , which correspond to the two optical lenses 12 respectively, and track the eyes of the experimental animal respectively. As shown in FIG. 2 , the eye tracker 15 can be installed above the optical lens 12 through the bracket 16 . Because the three-dimensional display device provided by the embodiment of the present invention is small in size, and the experimental animal wearing the three-dimensional display device has limited head bearing capacity, the eye tracker 15 is a miniature eye tracker, which is small in size and weight. On the one hand, the small size will not affect the three-dimensional visual stimulation observed by the experimental animal through the optical lens 12, and on the other hand, the light weight will not cause excessive burden on the experimental animal's head.

In the three-dimensional display device for non-human primates provided by this embodiment, the optical lens and the display panel are installed in a frame whose size is not greater than the distance between the ears and the distance between the front and nose of the non-human primate, and The frame is connected with a head strap for fixation, and an eye tracker is also installed in the frame, which enables non-human primates to correctly view the three-dimensional visual stimuli provided for them, providing a The three-dimensional display device used in the three-dimensional visual stimulation experiment of human primates provides a good equipment support for the research of brain network.

3 is a schematic structural diagram of Embodiment 3 of a three-dimensional display device for non-human primates provided by an embodiment of the present invention. As shown in FIG. 3 , the experimental system provided by this embodiment, on the basis of FIG. 1 , further includes: Distance adjustment device 17.

The interpupillary distance adjusting device 17 is disposed between the two optical lenses 12 for adjusting the distance between the two optical lenses 12 . Due to the large number of non-human primates participating in the experiment, the interpupillary distance between the eyes of different experimental animals is also different. According to the principle of animal eye imaging, only when the eyes are located in the center of the optical lens 12, the experimental animals can observe the most Clear 3D visual stimuli. Then, in order to make the three-dimensional experimental device suitable for many different experimental animals, a pupil distance adjusting device 17 is arranged between the two optical lenses. After wearing the three-dimensional display device for the experimental animal, adjust the interpupillary distance adjustment device 17 so that the centers of the two optical lenses 12 are aligned with the eyes of the experimental animal, so that the experimental animal can clearly see the three-dimensional visual stimulation and ensure the three-dimensional vision. Experimental effects of stimulation experiments.

In addition, after research on a large number of non-human primates, it is determined that the center distance between the two optical lenses 12 needs to be 41-51 mm, and the interpupillary distance adjustment device 17 can be added to make the three-dimensional display device suitable for different non-human primates.

In the three-dimensional display device for non-human primates provided by this embodiment, the optical lens and the display panel are installed in a frame whose size is not greater than the distance between the ears and the distance between the front and nose of the non-human primate, and The frame is connected with a head strap for fixation, and an eye tracker is also installed in the frame, so that the non-human primate can correctly view the three-dimensional visual stimuli provided for it. In addition, by setting the interpupillary distance adjustment device, so that the three-dimensional display device can be adapted to different non-human primates. Provided is a three-dimensional display device that can be used for three-dimensional visual stimulation experiments for non-human primates, and provides good equipment support for brain network research.

Note that the above are only preferred embodiments of the present invention and applied technical principles. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the protection scope of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and can also include more other equivalent embodiments without departing from the concept of the present invention. The scope is determined by the scope of the appended claims.

Claims (10)

1. A three-dimensional display device for non-human primates, characterized in that, comprising: a frame, an optical lens, a display panel, a control main board and a head fixing band; The display panel, the control mainboard and the optical lens are fixedly installed in the frame, the optical lenses are two, the display panel is located behind the optical lens, and the control mainboard is located in the display panel At the rear, the display panel, the control main board and the optical lens form a three-dimensional display system; The lateral dimension of the frame is not greater than the distance between the ears of the non-human primate to be tested, and the longitudinal dimension of the frame is not greater than the distance between the forehead and nose of the non-human primate to be tested; The head fixing strap is connected outside the frame, and is used for fixing the frame on the head of the non-human primate to be tested. 2 . The device according to claim 1 , further comprising an eye tracker, the eye tracker being installed in the frame, and the eye tracker being used to monitor a person wearing the three-dimensional display device. 3 . Tracking of eye movements in nonhuman primates. 3 . The device according to claim 1 , wherein there are two eye trackers, which are respectively installed above the two optical lenses. 4 . 4. The device according to claim 2 or 3, wherein the eye tracker is a miniature eye tracker. 5. The device according to claim 1, wherein the head restraint belt comprises a transverse restraint belt and a longitudinal restraint belt; The transverse fixing belt is connected to the transverse ends of the frame, one end of the longitudinal fixing belt is connected to the upper part of the frame, and the other end of the longitudinal fixing belt is connected to the middle of the transverse fixing belt. 6. The device according to claim 5, wherein the lengths of the lateral fixing straps and the longitudinal fixing straps are adjustable. 7. The device according to claim 1, wherein the thickness of the optical lens is less than a preset threshold. 8 . The device according to claim 1 , wherein an interpupillary distance adjusting device is included between the two optical lenses, and the interpupillary distance adjusting device is used to adjust the distance between the two optical lenses. 9 . 9 . The device according to claim 1 , wherein the center-to-center distance between the two optical lenses is between 41 and 51 millimeters. 10 . 10. The device of claim 1, wherein the frame has a lateral dimension of between 115 and 125 millimeters and a longitudinal dimension of the frame of between 32 and 42 millimeters.