The cardiac response of the crab Chasmagnathus granulatus as an index of sensory perception
When an animal's observable behavior remains unaltered, one can be misled in determining whether it is able to sense an environmental cue. By measuring an index of the internal state, additional information about perception may be obtained. We studied the cardiac response of the crab Chasmagnat...
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2009
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v212_n2_p313_Burnovicz http://hdl.handle.net/20.500.12110/paper_00220949_v212_n2_p313_Burnovicz |
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paper:paper_00220949_v212_n2_p313_Burnovicz2023-06-08T14:45:35Z The cardiac response of the crab Chasmagnathus granulatus as an index of sensory perception Behavior Cardiac response Invertebrates Sensory perception animal article Brachyura environment escape behavior heart heart rate photostimulation physiology reaction time vision Animals Brachyura Environment Escape Reaction Heart Heart Rate Photic Stimulation Reaction Time Visual Perception Animalia Chasmagnathus Chasmagnathus granulata Crustacea Decapoda (Crustacea) Invertebrata Neptunia When an animal's observable behavior remains unaltered, one can be misled in determining whether it is able to sense an environmental cue. By measuring an index of the internal state, additional information about perception may be obtained. We studied the cardiac response of the crab Chasmagnathus to different stimulus modalities: a light pulse, an air puff, virtual looming stimuli and a real visual danger stimulus. The first two did not trigger observable behavior, but the last two elicited a clear escape response. We examined the changes in heart rate upon sensory stimulation. Cardiac response and escape response latencies were also measured and compared during looming stimuli presentation. The cardiac parameters analyzed revealed significant changes (cardio-inhibitory responses) to all the stimuli investigated. We found a clear correlation between escape and cardiac response latencies to different looming stimuli. This study proved useful to examine the perceptual capacity independently of behavior. In addition, the correlation found between escape and cardiac responses support previous results which showed that in the face of impending danger the crab triggers several coordinated defensive reactions. The ability to escape predation or to be alerted to subtle changes in the environment in relation to autonomic control is associated with the complex ability to integrate sensory information as well as motor output to target tissues. This 'fear, fight or flight' response gives support to the idea of an autonomic-like reflexive control in crustaceans. 2009 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v212_n2_p313_Burnovicz http://hdl.handle.net/20.500.12110/paper_00220949_v212_n2_p313_Burnovicz |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Behavior Cardiac response Invertebrates Sensory perception animal article Brachyura environment escape behavior heart heart rate photostimulation physiology reaction time vision Animals Brachyura Environment Escape Reaction Heart Heart Rate Photic Stimulation Reaction Time Visual Perception Animalia Chasmagnathus Chasmagnathus granulata Crustacea Decapoda (Crustacea) Invertebrata Neptunia |
| spellingShingle |
Behavior Cardiac response Invertebrates Sensory perception animal article Brachyura environment escape behavior heart heart rate photostimulation physiology reaction time vision Animals Brachyura Environment Escape Reaction Heart Heart Rate Photic Stimulation Reaction Time Visual Perception Animalia Chasmagnathus Chasmagnathus granulata Crustacea Decapoda (Crustacea) Invertebrata Neptunia The cardiac response of the crab Chasmagnathus granulatus as an index of sensory perception |
| topic_facet |
Behavior Cardiac response Invertebrates Sensory perception animal article Brachyura environment escape behavior heart heart rate photostimulation physiology reaction time vision Animals Brachyura Environment Escape Reaction Heart Heart Rate Photic Stimulation Reaction Time Visual Perception Animalia Chasmagnathus Chasmagnathus granulata Crustacea Decapoda (Crustacea) Invertebrata Neptunia |
| description |
When an animal's observable behavior remains unaltered, one can be misled in determining whether it is able to sense an environmental cue. By measuring an index of the internal state, additional information about perception may be obtained. We studied the cardiac response of the crab Chasmagnathus to different stimulus modalities: a light pulse, an air puff, virtual looming stimuli and a real visual danger stimulus. The first two did not trigger observable behavior, but the last two elicited a clear escape response. We examined the changes in heart rate upon sensory stimulation. Cardiac response and escape response latencies were also measured and compared during looming stimuli presentation. The cardiac parameters analyzed revealed significant changes (cardio-inhibitory responses) to all the stimuli investigated. We found a clear correlation between escape and cardiac response latencies to different looming stimuli. This study proved useful to examine the perceptual capacity independently of behavior. In addition, the correlation found between escape and cardiac responses support previous results which showed that in the face of impending danger the crab triggers several coordinated defensive reactions. The ability to escape predation or to be alerted to subtle changes in the environment in relation to autonomic control is associated with the complex ability to integrate sensory information as well as motor output to target tissues. This 'fear, fight or flight' response gives support to the idea of an autonomic-like reflexive control in crustaceans. |
| title |
The cardiac response of the crab Chasmagnathus granulatus as an index of sensory perception |
| title_short |
The cardiac response of the crab Chasmagnathus granulatus as an index of sensory perception |
| title_full |
The cardiac response of the crab Chasmagnathus granulatus as an index of sensory perception |
| title_fullStr |
The cardiac response of the crab Chasmagnathus granulatus as an index of sensory perception |
| title_full_unstemmed |
The cardiac response of the crab Chasmagnathus granulatus as an index of sensory perception |
| title_sort |
cardiac response of the crab chasmagnathus granulatus as an index of sensory perception |
| publishDate |
2009 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00220949_v212_n2_p313_Burnovicz http://hdl.handle.net/20.500.12110/paper_00220949_v212_n2_p313_Burnovicz |
| _version_ |
1768544212221952000 |