Morph Continua
Morph Continua - Related Videos
07:34
Perceptual and Category Processing of the Uncanny Valley Hypothesis' Dimension of Human Likeness: Some Methodological Issues
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Cited by 25 •
2013
Investigation of the Uncanny Valley Hypothesis and affective experience requires an understanding of the hypothesis' dimension of human likeness (DHL). This protocol allows representation of the DHL and examination of categorical perception. Use of the same stimuli and fMRI to distinguish brain regions responsive to physical and category change is illustrated.
06:27
Assaying Predatory Feeding Behaviors in Pristionchus and Other Nematodes
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Cited by 18 •
2016
Behavioral assays provide powerful tools for understanding neuronal function. Here we present several protocols for quantifying predatory feeding behavior found in the model nematode Pristionchus pacificus and its relatives. Additionally, we provide methods for analyzing predatory feeding adaptations including mouth structures and teeth.
08:27
Use of Chironomidae (Diptera) Surface-Floating Pupal Exuviae as a Rapid Bioassessment Protocol for Water Bodies
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Cited by 33 •
2015
Rapid bioassessment protocols using benthic macroinvertebrates are often used to monitor and assess water quality. An efficient protocol involves collections of Chironomidae surface-floating pupal exuviae (SFPE). Here, techniques for field collection, laboratory processing, slide mounting, and identification of Chironomidae SFPE are described.
10:40
Direct Delivery of MIF Morpholinos Into the Zebrafish Otocyst by Injection and Electroporation Affects Inner Ear Development
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Cited by 8 •
2011
A method to deliver morpholinos directly into the zebrafish otocyst at 24hpf has been developed. Using microinjection of morpholinos into the lumen of otic vesicle and electroporation to effect penetration, we were able to bypass the effect of morpholinos on the brain and obtain effects specific to the inner ear.
14:38
Creating Objects and Object Categories for Studying Perception and Perceptual Learning
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Cited by 12 •
2012
We describe a novel methodology for creating naturalistic 3-D objects and object categories with precisely defined feature variations. We use simulations of the biological processes of morphogenesis and phylogenesis to create novel, naturalistic virtual 3-D objects and object categories that can then be rendered as visual images or haptic objects.
FAQs
Variation can reflect genetic differences, developmental conditions, environmental influences, or combinations of these factors. These influences may shift traits such as body size, shape, coloration, or structural features, producing individuals with intermediate phenotypes. Considering these sources together helps behavioral researchers interpret morphological differences as outcomes of biological variation rather than automatically treating them as fixed categories.
Intermediate phenotypes allow researchers to examine whether behavior changes gradually with morphology or appears only at particular points along a range of forms. This approach can reveal patterns that category-based comparisons might obscure. It is especially useful when individuals differ in degree rather than belonging to clearly separated types, because behavioral variation can then be evaluated alongside continuous differences in form.
Researchers compare individuals with differing measurements or visible traits and examine whether those differences correspond to changes in movement, communication, social interaction, or ecological performance. The comparison does not assume that form directly determines behavior; instead, it identifies associations between the two. This makes the morph continuum a framework for studying how biological variation and behavior change together.
Rigid categories place individuals into distinct groups, which can simplify comparisons but may overlook gradual or intermediate variation. A continuum-based approach preserves the degree of difference among individuals and can represent population diversity more accurately. In behavioral studies, this may clarify whether observed differences track incremental changes in form instead of reflecting an artificial division between morphological types.
A study can first characterize relevant physical traits across individuals, then document behavioral differences for the same population or set of individuals. Researchers compare morphology and behavior across the observed range rather than limiting analysis to named categories. The resulting associations can show whether changes in size, shape, coloration, or body structure accompany differences in movement, communication, social interaction, or ecological performance.
This framework supports questions about whether body structure relates to movement, whether coloration or shape accompanies communication differences, and whether morphology corresponds with social interaction or ecological performance. It can also help researchers interpret variation within a population. By retaining intermediate forms, the analysis connects physical diversity with multiple behavioral domains instead of restricting investigation to a single categorical contrast.