Determination of a DL using two-point tactual stimuli: A signal-detection approach

A review of some unusual applications of signal detection theory

“…Two notable differences here from the usual SDT paradigms were that successive signals were highly correlated and that the signal strength increased with time. Cross et al (1970) applied signal detection theory to tactual stimuli; Cox and Hawkins (1976) to kinesthetic discrimination; Corbit and Engen (1971) to smell;Diekhoff (1977) to the detection of spontaneous galvanic skin responses; and Linker et al (1964) andO'Mahony (1972) to taste. An application to the testing of preferences for different mixtures of ingredients in ice-cream is given by Angus and Daniel (1974).…”

A Detection-Theoretic Model of Echo Inhibition.

“…Here we describe a psychometric model of signal detection to segregate the limitations in detection of an interaural time cue imposed by linear effects, such as additive internal noise, from the effects of nonlinear internal transforms of the psychophysical scale (Egan, 1965; Laming, 1986). Detection-theory analysis of sensory events is ubiquitous in perception research from visual localization (Allan, 1968; De Valois & De Valois, 1988) to tactile perception (Boyer, Cross, Guyot, & Washington, 1970; Cross, Boyer, & Guyot, 1970), olfactory signal detection (Cain, 1977), attention (Swets, 1984), cross-modal processing (Gescheider, Sager, & Ruffolo, 1975; Haessly, Sirosh, & Miikkulainen, 1995; Mulligan & Shaw, 1980), and kinesthetic discrimination (Cox & Hawkins, 1976). A noteworthy feature of the detection-theory model described here is that it is not domain specific and may thus be adapted to phenomena related to other sensory systems that, in principle, display similar types of spatiotemporal interactions.…”

A TSD determination of a DL using two-point tactual stimuli applied to the back

“…Using a standard stimulus of 80 mm, the OL for four male Ss appeared to lie between 10-15 mm. This DL was larger than one previously reported for the dorsal forearm, in harmony with the fact that the two-point threshold is larger for the back than for the forearm.Recently, Cross, Boyer, & Guyot (1970), f ollowing a suggestion by Underwood (1966), used a theory of signal-detection (TSO) approach in determining the amount of change necessary in a supraliminal two-point…”

“…Recently, Cross, Boyer, & Guyot (1970), f ollowing a suggestion by Underwood (1966), used a theory of signal-detection (TSO) approach in determining the amount of change necessary in a supraliminal two-point…”

“…In this way it was possible to obtain three ROC curves for each S which reflected his sensitivity under the test conditions of 85, 90, and 95 mrn. All other aspects of the procedure have been previously reported (Cross et al, 1970).…”