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A Dreyer

Publications and source records attributed to A Dreyer.

4 recordsLinked to original sources
PubMed1984

Localization of tones and noise in the horizontal plane by unrestrained house mice (Mus musculus).

House mice (Mus musculus, outbred strain NMRI) were trained to locate loudspeakers at the margin of a wire-mesh covered circular platform. Sound signals were tone bursts of 1, 15, 50 and 80 kHz and noise bursts (bandwidth 15-80 kHz). Localization acuity as represented by orientation angles (alpha) toward the speaker was determined at 5 radial distances from the centre of the platform. If the animals could localize under closed-loop conditions (with repetitive stimulation), the distributions of (alpha) showed a significant peak at the speaker position (0 degrees) and mean orientation angles (alpha) for the different stimuli all varied around 0 degrees. Distributions of (alpha) from open-loop tests were not peaked, i.e. mice did not localize the sound source. We calculated the median angle (beta) of the distributions of orientated runs and used (beta) as a measure for the accuracy of localization. Smallest values of beta were 12 degrees for 1 kHz, 15 degrees for 15 kHz, 9.5 degrees for 50 kHz, 8.5 degrees for 80 kHz tone bursts and 7 degrees for the noise bursts. The results are discussed in relation to possible localization mechanisms in mice.

Animals↗
PubMed1982

Nonverbal communication accuracy in married couples: relationship with marital complaints.

Nonverbal communication abilities were examined as mediators of martial complaints for a sample of 48 recently married couples. Based on social penetration theory, we predicted that couples cohabiting longer would be better at decoding their partners' nonverbal expressions than couples cohabiting a shorter time, that individuals married to accurate nonverbal communicators would evidence fewer martial complaints, and that individuals with fewer marital complaints would be better nonverbal communicators. The data suggest that nonverbal decoding abilities do not covary with relationship length, although spouses were better at decoding their partners' expressions than were a panel of judges. In addition, nonverbal sensitivity to one's spouse did not covary with martial complaints, although an internal analysis suggests that wives' ability to decode husbands poorly encoded messages covaries negatively with both his and her complaints. Finally, husbands married to wives who are good encoders had fewer complaints, whereas the reverse was found to hold true for the relationship between husbands' encoding abilities on wives' complaints.

Adult↗