Track topics on Twitter Track topics that are important to you
Visual pigments can vary across the retina in many vertebrates, but the behavioural consequences of this retinal heterogeneity are unknown. Guppies (Poecilia reticulata) vary dorsoventrally in visual pigments and forage both on the ground and at the water surface, exposing different retinal regions to two very different visual environments. We tested guppy behaviour towards a moving stimulus presented below or above the guppy. We used 12 different narrow-band wavelength stimuli matching each of the opsin peak sensitivities presented either at the top or the bottom of our experimental apparatus. We analysed behaviours of 50 male and 50 female guppies over 4800 trials where a moving stimulus pattern was presented to each guppy. We found that wavelength, position and speed of the stimuli influenced male and female behaviour and seems to be mediated by the long wavelength sensitive photoreceptors. Males also had stronger behavioural responses than females whereas females performed more foraging-related pecking behaviour. Our results suggest that the spatial requirement of visual tasks and their ecological context are important and appear to be partly correlated with photoreceptor arrangement in the retina.
This article was published in the following journal.
Name: Vision research
In our interactions with people and objects in the world around us, as well as in communicating our thoughts, we rely on the use of conceptual knowledge stored in long-term memory. From a frame-theore...
Specific memory processes and neurological disorders can be ascribed to different dorsoventral regions of the hippocampus. Recently, differences in the anatomical and physiological properties between ...
To compare coronary artery luminal enhancement in coronary computed tomography angiography (CCTA) between ventral and dorsal region-of-interest (ROI) bolus tracking in the descending aorta.The records...
Colour signalling traits are often lost over evolutionary time, perhaps because they increase vulnerability to visual predators or lose relevance in terms of sexual selection. Here, we used spectromet...
Colour is a defining feature of many objects, playing a crucial role in our ability to rapidly recognise things in the world around us and make categorical distinctions. For example, colour is a usefu...
The purpose of the study is to determine the optimal surgical approach (ventral versus dorsal) for patients with multi-level cervical spondylotic myelopathy (CSM). There are no establishe...
This is a randomized non-blinded comparison of dorsal vs. ventral approach for buccal mucosa graft urethroplasty in the bulbar urethra. Buccal mucosa graft is a common method of repairing ...
The investigators propose a randomized non-blinded comparison of dorsal vs. ventral approach for buccal mucosa graft urethroplasty in the bulbar urethra. Buccal mucosa graft is a common me...
The purpose of this study is determine the involvement of motor system in the memory of manipulable objects. The idea is to stimulate the ventral premotor cortex with transcranial magnetic...
Trans Cranial Magnetic Stimulation (TMS) over dorsal visual system will disturb the ability to identify objects with decreased level of fragmentation
The paired bundles of nerve fibers entering and leaving the spinal cord at each segment. The dorsal and ventral nerve roots join to form the mixed segmental spinal nerves. The dorsal roots are generally afferent, formed by the central projections of the spinal (dorsal root) ganglia sensory cells, and the ventral roots efferent, comprising the axons of spinal motor and autonomic preganglionic neurons. There are, however, some exceptions to this afferent/efferent rule.
The front part of hindbrain that lies between MEDULLA OBLONGATA and the midbrain (MESENCEPHALON) ventral to the CEREBELLUM. It is composed of two parts, the dorsal and the ventral. Pons serves as a relay station for important neural pathways between the cerebellum to the CEREBRUM.
A region of the subthalamus located ventral to the THALAMUS and dorsal to the SUBTHALAMIC NUCLEUS.
A large group of nuclei lying between the internal medullary lamina and the internal capsule. It includes the ventral anterior, ventral lateral, and ventral posterior nuclei.
A nucleus located at the midline of the ventral MIDBRAIN TEGMENTUM with primarily GABAergic projections to the median and dorsal raphe nuclei and the MIDBRAIN CENTRAL GRAY.