Subjective Intensity of Coffee Odor

1960 ◽  
Vol 73 (3) ◽  
pp. 424 ◽  
Author(s):  
T. S. Reese ◽  
S. S. Stevens
Keyword(s):  
Subjective Intensity

scholarly journals Assessment of subjective intensity of pain during ultrasonic supragingival calculus removal: A comparative study

2014 ◽  
Vol 18 (4) ◽  
pp. 472
Author(s):  
Sachin Malagi ◽  
Kirti Pattanshetti ◽  
Radhika Bharmappa ◽  
AnnajiSreedhara Reddy ◽  
Jagadish Pai ◽  
...  
Keyword(s):  
Comparative Study ◽  
Subjective Intensity

Positron emission tomographic analysis of cerebral structures activated specifically by repetitive noxious heat stimuli

1994 ◽  
Vol 71 (2) ◽  
pp. 802-807 ◽  
Author(s):  
K. L. Casey ◽  
S. Minoshima ◽  
K. L. Berger ◽  
R. A. Koeppe ◽  
T. J. Morrow ◽  
...  
Keyword(s):  
A Priori ◽  
Estimation Procedure ◽  
Subjective Rating ◽  
Positron Emission Tomographic ◽  
Noxious Heat ◽  
Heat Sensation ◽  
Medial Dorsal ◽  
Subjective Intensity ◽  
Positron Emission ◽  
Tomographic Analysis

1. To identify the forebrain and brain stem structures that are active during the perception of acute heat pain in humans, we performed H2 15O positron emission tomographic (PET) analyses of cerebral blood flow (CBF) on nine normal volunteers while they received repetitive noxious (50 degrees C) and innocuous (40 degrees C) 5 s heat pulses to the forearm (average resting temperature of 31.8 degrees C). Each subject rated the subjective intensity of each stimulation series according to a magnitude estimation procedure in which 0 = no heat sensation, 7 = barely painful, and 10 = barely tolerable. 2. Three scans were performed at each temperature. Mean CBF images were created for each experimental condition and oriented onto standardized stereotaxic coordinates. Subtraction images were created between conditions for each subject and averaged across subjects. Volumes of interest (VOI) were chosen, based on a priori hypotheses and the results of previously published PET studies. In addition, a separate statistical summation analysis of individual voxels was performed. Statistical thresholds were established with corrections for multiple comparisons. 3. Significant CBF increases to 50 degrees C stimuli were found in the contralateral thalamus, cingulate cortex, S2 and S1 cortex, and insula. The ipsilateral S2 cortex and thalamus, and the medial dorsal midbrain and cerebellar vermis also showed significant CBF increases. All subjects rated the 50 degrees C stimuli as painful (average subjective rating = 8.9 +/- 0.9 SD) and the 40 degrees C stimuli as warm, but not painful (average subjective rating = 2.1 +/- 1.0).(ABSTRACT TRUNCATED AT 250 WORDS)

Subjective intensity of mineral taste in water.

1965 ◽  
Vol 69 (4) ◽  
pp. 369-374 ◽  
Author(s):  
William H. Bruvold ◽  
William R. Gaffey
Keyword(s):  
Subjective Intensity

Subjective Intensity of the Lily-of-the-Valley Scent

1986 ◽  
Vol 63 (2) ◽  
pp. 879-882 ◽  
Author(s):  
Loredana Hvastja ◽  
Lucia Zanuttini
Keyword(s):  
Power Law ◽  
Psychophysical Function ◽  
Subjective Intensity ◽  
Naturalistic Approach

14 blind-folded subjects were requested to give numerical judgments of the perceived intensities of ¼, ½, 1, 2, 4, 8, lily-of-the-valley bunches, according to a naturalistic approach. The psychophysical function conforms to a power law. The exponent, smaller than 1, is in the same range as those commonly found for smell.

scholarly journals Subjective Intensity for Intermittent Short-Duration Odor: Cognitive and Learning Effects

2005 ◽  
Vol 36 (1) ◽  
pp. 23-30 ◽  
Author(s):  
Takefumi KOBAYASHI ◽  
Tatsu KOBAYAKAWA ◽  
Sachiyo AKIYAMA ◽  
Hideki TODA ◽  
Sachiko SAITO
Keyword(s):  
Short Duration ◽  
Learning Effects ◽  
Subjective Intensity

scholarly journals Effect of the subjective intensity of fatigue and interoception on perceptual regulation and performance during sustained physical activity

PLoS ONE ◽  
2022 ◽  
Vol 17 (1) ◽  
pp. e0262303
Author(s):  
Aaron Greenhouse-Tucknott ◽  
Jake B. Butterworth ◽  
James G. Wrightson ◽  
Neil A. Harrison ◽  
Jeanne Dekerle
Keyword(s):  
Physical Activity ◽  
Repeated Measures ◽  
Subjective Experience ◽  
Endurance Performance ◽  
Physical Endurance ◽  
Affective Valence ◽  
Experimental Conditions ◽  
Sustained Contraction ◽  
Perceived Effort ◽  
Subjective Intensity

Background The subjective experience of fatigue impairs an individual’s ability to sustain physical endurance performance. However, precise understanding of the specific role perceived fatigue plays in the central regulation of performance remains unclear. Here, we examined whether the subjective intensity of a perceived state of fatigue, pre-induced through prior upper body activity, differentially impacted performance and altered perceived effort and affect experienced during a sustained, isometric contraction in lower body. We also explored whether (cardiac) interoception predicted the intensity of experienced perceptual and affective responses and moderated the relationships between constructs during physical activity. Methods Using a repeated-measures study design, thirty male participants completed three experimental conditions, with the intensity of a pre-induced state of fatigue manipulated to evoke moderate (MOD), severe (SEV) and minimal (control; CON) intensity of perceptions prior to performance of the sustained contraction. Results Performance of the sustained contraction was significantly impaired under a perceived state of fatigue, with reductions of 10% and 14% observed in the MOD and SEV conditions, respectively. Performance impairment was accompanied by greater perceived effort and more negative affective valence reported during the contraction. However, effects were limited to comparisons to CON, with no difference evident between the two experimental trials (i.e. MOD vs. SEV). Individuals’ awareness of their accuracy in judging resting heartbeats was shown to predict the subjective intensity of fatigue experienced during the endurance task. However, interoception did not moderate the relationships evident between fatigue and both perceived effort and affective valence. Conclusions A perceived state of fatigue limits endurance performance, influencing both how effortful activity is perceived to be and the affective experience of activity. Though awareness of interoceptive representations of bodily states may be important to the subjective experience of fatigue, interoception does not modulate the relationships between perceived fatigue and other perceptual (i.e. effort) and affective constructs.

Psychophysical Assessment of Whole-Body Vibration

1971 ◽  
Vol 13 (1) ◽  
pp. 41-50 ◽  
Author(s):  
Richard W. Shoenberger ◽  
C. Stanley Harris
Keyword(s):  
Magnitude Estimation ◽  
Whole Body Vibration ◽  
Whole Body ◽  
Subjective Response ◽  
Frequency Range ◽  
General Shape ◽  
Subjective Intensity ◽  
Straight Line ◽  
Matching Procedure ◽  
Body Response

Using the methods of magnitude estimation and intensity matching, curves of equal subjective vibration intensity were constructed over the frequency range from 3.5 to 20 Hz. Twenty subjects made magnitude estimations of the intensity of vibration at 0.08, 0.16, 0.24, 0.40, 0.48, and 0.56 gz with vibration at 0.32 gz serving as a standard. These intensities were judged at each of the frequencies of 3.5, 5, 7, 9, 11, 15, and 20 Hz. For each frequency, the results were plotted as straight-line functions on log-log graphs of subjective intensity against physical intensity. The slopes of the lines varied as a function of frequency, the steepest slope occurring at 5 Hz. (the frequency of greatest body response due to resonance in this axis). Additional experiments were conducted in which ten subjects matched the intensity of 9-Hz. vibration at 0.16, 0.36, and 0.56 gz with vibration at each of the other six frequencies listed above, and ten different subjects made similar equality judgments against 9-Hz. vibration at 0.08, 0.26, and 0.46 gz. Equal intensity curves derived from the magnitude estimation data show the same general shape and comparable levels as corresponding curves determined experimentally using the intensity matching procedure. These methods provide more systematic and quantitative characterizations of subjective response to vibration than previous approaches which have relied heavily on qualitative descriptions.

Sign in / Sign up

Export Citation Format

Share Document