| 1. |
- Crucianelli, Laura, et al.
(author)
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Interoception as independent cardiac, thermosensory, nociceptive, and affective touch perceptual submodalities
- 2022
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In: Biological Psychology. - Stockholm : Karolinska Institutet, Dept of Neuroscience. - 0301-0511 .- 1873-6246.
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Journal article (peer-reviewed)abstract
- Interoception includes signals from inner organs and thin afferents in the skin, providing information about the body’s physiological state. However, the functional relationships between interoceptive submodalities are unclear, and thermosensation as skin-based interoception has rarely been considered. We used five tasks to examine the relationships among cardiac awareness, thermosensation, affective touch, and nociception. Thermosensation was probed with a classic temperature detection task and the new dynamic thermal matching task, where participants matched perceived moving thermal stimuli in a range of colder/warmer stimuli around thermoneutrality. We also examined differences between hairy and non-hairy skin and found superior perception of dynamic temperature and static cooling on hairy skin. Notably, no significant correlations were observed across interoceptive submodality accuracies (except for cold and pain perception in the palm), which indicates that interoception at perceptual levels should be conceptualised as a set of relatively independent processes and abilities rather than a single construct.
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| 2. |
- Radziun, Dominika, et al.
(author)
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Limits of cross-modal plasticity? Short-term visual deprivation does not enhance cardiac interoception, thermosensation, or tactile spatial acuity
- 2022
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In: Biological Psychology. - Stockholm : Karolinska Institutet, Dept of Neuroscience. - 0301-0511 .- 1873-6246.
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Journal article (peer-reviewed)abstract
- In the present study, we investigated the effect of short-term visual deprivation on discriminative touch, cardiac interoception, and thermosensation by asking 64 healthy volunteers to perform four behavioral tasks. The experimental group contained 32 subjects who were blindfolded and kept in complete darkness for 110 minutes, while the control group consisted of 32 volunteers who were not blindfolded but were otherwise kept under identical experimental conditions. Both groups performed the required tasks three times: before and directly after deprivation (or control) and after an additional washout period of 40 minutes, in which all participants were exposed to normal light conditions. Our results showed that short- term visual deprivation had no effect on any of the senses tested. This finding suggests that short-term visual deprivation does not modulate basic bodily senses and extends this principle beyond tactile processing to the interoceptive modalities of cardiac and thermal sensations.
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| 3. |
- Kjellberg, Anders, et al.
(author)
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Physiological response patterns during 'intake' and 'rejection' tasks
- 1979
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In: Biological Psychology. - Netherlands : Elsevier. - 0301-0511 .- 1873-6246. ; 9:1, s. 63-76
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Journal article (peer-reviewed)abstract
- Two 2-min tasks, one requiring outer-directed attention (intake task), the other a mental arithmetic task (rejection task) were presented to 20 subjects. According to Lacey the distinguishing feature of the response to intake task are cardiac deceleration and blood pressure decreases. None of these responses was obtained. Some variables, however, were only affected by one of the task; the intake task led to a decreased hand (skin) blood flow and an increased hand vascular resistance, whereas a heart rate acceleration and increased forearm (muscle) blood flow and decreased forearm vascular resistance were observed during the rejection task. Blood pressure, respiration rate and skin conductance were similarly affected by the two tasks. Inconsistencies among previous studies of the response to the two types of tasks were discussed and found to be partially explained by methodological differences.
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| 5. |
- Magnusson, Eva, 1947-, et al.
(author)
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Heart rate control and aversive stimulation
- 1981
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In: Biological Psychology. - Netherlands : Elsevier. - 0301-0511 .- 1873-6246. ; 12:2-3, s. 211-222
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Journal article (peer-reviewed)abstract
- College students were required to train heart rate control (heart rate increase and decrease) with visual feedback for three sessions in a within-person design. In the second and third sessions a test period was added when electric shocks were delivered during half in the trials. Subjects had been grouped in advance in an Aware and an Unaware group on the basis of the Automatic Perception Questionnaire (APQ).The results contradicted some findings by other authors which claim that biofeedback can be used to ameliorate subjective effects of aversive stimulation. Alternative interpretations of the discrepant findings were discussed in terms of expectancy effects that may influence autonomically Aware subjects more strongly than Unaware subjects.
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| 6. |
- Magnusson, Eva, 1947-
(author)
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The effects of controlled muscle tension on performance and learning of heart-rate control
- 1976
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In: Biological Psychology. - Netherlands : Elsevier. - 0301-0511 .- 1873-6246. ; 4:2, s. 81-92
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Journal article (peer-reviewed)abstract
- Thirty female subjects were divided in three groups and instructed in group I to increase their HRs with the aid of continuous feedback of performance, while they tensed their right forearm muscles 20% of maximal voluntary contraction. In the last session only feedback was used. Group II were trained with feedback only. Group III for the first two sessions tensed their muscles only, and in the last session trained HR increases with feedback only.Group I was superior in HR performance in the first two sessions. In the third session they deteriorated significantly and could not be distinguished from the other two groups. The results were interpreted in terms of relations between somatic and autonomic events and transfer between different states of somatic involvement during learning.Electrodermal activity and respiration were included as control variables.
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