title: A light in the dark; an investigation of fetal visual perception

authors: Leov, Jessica Noelle

subjects: fetal vision

abstract: How does a fetus engage with their visual world? Prenatal developmental trajectories are primarily unexplored, with fetal visual perception the most poorly understood of all sensory systems. In the third trimester, fetuses not only possess the ability to process perceptual information, but recent research suggests that enough light penetrates the womb to enable a visual experience. Understanding fetal visual capabilities has the potential to reshape our knowledge of both visual and psychological developmental trajectories. This thesis sits at the intersection of developmental psychology, medical imaging, and vision science.  The overall aim of this work is to assess fetal visual function through novel experimental paradigms. We employed 2D ultrasound to visualize the fetal lens and index eye movements in response to light stimuli presented in utero. Tracking fetal eye movements in response to visual stimuli beyond light / no light has never been previously attempted. Three separate experiments explore central elements of fetal visual perception and cognition, including differential fetal responding to temporal and nasal visual fields, anticipatory gaze, and fetal sensitivity to agentive motion cues. The results of these studies demonstrate that the fetus actively engages with their visual environment exhibiting a preference for stimuli presented in their temporal visual field and the ability to perform anticipatory visual gaze, specifically that fetuses can use an auditory cue to anticipate the appearance of a light stimulus. These experiments and new methods offer new key insights into early sensory and psychological development.

text: A light in the dark; an investigation of fetal visual perception How does a fetus engage with their visual world? Prenatal developmental trajectories are primarily unexplored, with fetal visual perception the most poorly understood of all sensory systems. In the third trimester, fetuses not only possess the ability to process perceptual information, but recent research suggests that enough light penetrates the womb to enable a visual experience. Understanding fetal visual capabilities has the potential to reshape our knowledge of both visual and psychological developmental trajectories. This thesis sits at the intersection of developmental psychology, medical imaging, and vision science.  The overall aim of this work is to assess fetal visual function through novel experimental paradigms. We employed 2D ultrasound to visualize the fetal lens and index eye movements in response to light stimuli presented in utero. Tracking fetal eye movements in response to visual stimuli beyond light / no light has never been previously attempted. Three separate experiments explore central elements of fetal visual perception and cognition, including differential fetal responding to temporal and nasal visual fields, anticipatory gaze, and fetal sensitivity to agentive motion cues. The results of these studies demonstrate that the fetus actively engages with their visual environment exhibiting a preference for stimuli presented in their temporal visual field and the ability to perform anticipatory visual gaze, specifically that fetuses can use an auditory cue to anticipate the appearance of a light stimulus. These experiments and new methods offer new key insights into early sensory and psychological development.

year: 2024

title: The Influence of Match-Day Napping in Elite Female Netball Athletes

authors: O'Donnell, Shannon Lea

subjects: team-sports

abstract: Purpose:
To assess the effect of match-day napping and duration of naps on perceptual and performance indices in elite female netball players over two consecutive netball seasons.

Methods:
Fourteen elite female netball athletes (mean ± SD; age = 23 ± 6 yr) participated in an observational study over 26 competition matches. On each match day, athletes provided information on their napping habits, perceived energy levels, and then performed 3 countermovement jumps (CMJ) 3h30 prior to the start of the match. One hour following the match, subjective player performance ratings from the players and two members of the coaching staff were obtained. Naps were characterized into 3 conditions for analysis; No Nap (NN), <20 min Nap (SHORT), and ≥20 min Nap (LONG).

Results:
A significant difference in peak jump velocity was observed between the SHORT and the NN condition in favor of the shorter nap (3.23 ± 0.26 and 3.07 ± 0.36 m.s-1, respectively, d = 0.34, p < 0.05). A moderate, significant difference (d = 0.85; p < 0.05) was observed for the coach rating of performance (out of 10) between the SHORT and the NN condition (7.2 ± 0.8 and 6.4 ± 0.9, respectively) in favor of SHORT.

Conclusion:
The findings from the study would suggest that a short nap (<20 min) on the day of competition can enhance jump velocity and improve subjective performance in elite netball players, as assessed by coaching staff.

text: The Influence of Match-Day Napping in Elite Female Netball Athletes Purpose:
To assess the effect of match-day napping and duration of naps on perceptual and performance indices in elite female netball players over two consecutive netball seasons.

Methods:
Fourteen elite female netball athletes (mean ± SD; age = 23 ± 6 yr) participated in an observational study over 26 competition matches. On each match day, athletes provided information on their napping habits, perceived energy levels, and then performed 3 countermovement jumps (CMJ) 3h30 prior to the start of the match. One hour following the match, subjective player performance ratings from the players and two members of the coaching staff were obtained. Naps were characterized into 3 conditions for analysis; No Nap (NN), <20 min Nap (SHORT), and ≥20 min Nap (LONG).

Results:
A significant difference in peak jump velocity was observed between the SHORT and the NN condition in favor of the shorter nap (3.23 ± 0.26 and 3.07 ± 0.36 m.s-1, respectively, d = 0.34, p < 0.05). A moderate, significant difference (d = 0.85; p < 0.05) was observed for the coach rating of performance (out of 10) between the SHORT and the NN condition (7.2 ± 0.8 and 6.4 ± 0.9, respectively) in favor of SHORT.

Conclusion:
The findings from the study would suggest that a short nap (<20 min) on the day of competition can enhance jump velocity and improve subjective performance in elite netball players, as assessed by coaching staff.

year: 2018

title: E hoki ki to maunga: The quintessential elements of home

authors: Emery, Debra Joy Tepora

subjects: hau kainga

abstract: He kopu puta tahi, he taura whiri tātou;
whiringa a nuku, whiringa a rangi, te whatia e
Issue of one womb, we are a rope woven of many strands; woven on earth, woven in heaven, it will not break (Rev Māori Marsden, 1992)
Ngati Te Takinga is a hapū (sub-tribe) belonging to the Iwi (tribe) Ngati Pikiao. An affiliated member of the Te Arawa confederation of tribes, Ngati Pikiao occupies the Okere and Rotoiti Lakes district of Rotorua in the central North Island of Aotearoa New Zealand.
This thesis seeks to acknowledge and address the concerns that Ngati Te Takinga has regarding impending cultural discontinuity. The concerns arise due to the hapū's limited human capability and capacity being the result of three things. Firstly, the ongoing demise of tribal elders (and leaders) and the subsequent loss to the hapū of cultural knowledge, skills, leadership and expertise. Secondly, the low numbers of adept,
culturally proficient successors 'coming through' (to replace the elders) and finally, the detribalised and diasporic (dispersed) nature of our people. The hapū and the marae Te Takinga (a last outwardly discernible bastion of Ngati Te Takinga cultural identity and distinction) are jeopardised as a result of these phenomenon.
This thesis is part of a hapū strategy that attempts to address these problems. Positing the
reconnection of our dispersed Ngati Te Takinga 'away-dwellers' as a beginning
solution, the central questions raised by this thesis are  how [does] Ngati Te Takinga
'home-dweller' discourse impact on the 'coming home' experiences and 'reconnection'
of Ngati Te Takinga away-dwellers?  and  what are the [are there] implications for Ngati
Te Takinga cultural continuity? 
The maintenance of Ngati Te Takinga cultural continuity forms the aho mātua or main thread of this work. Using narrative enquiry as a broad methodological framework,stories were gathered from four different groups of Ngati Te Takinga peoples. The groups were home-dwellers (mana whenua or ahi kaa), te ahi tere (away-dwellers who
have returned home to live); te ahi tere (away-dwellers who intend returning in the future) and te ahi tere (away-dwellers who have no intention of returning home to live). The stories (narratives) investigated notions of home, belongingness and Māori identity in relation to the trichotomy of the connection, disconnection and the reconnection of Ngati Te Takinga peoples; the stories were analysed and co-constructed with participants for meaning.
The stories showed that while the hapū aspires to gather up the strengths of a dispersed people to reinvigorate our culture and the marae, existing and competing discourses around authenticity, authority and Ngati Te Takinga identity create a tension between the home (mana whenua/ahi kaa) and away-dwelling Ngati Te Takinga people; including those away-dwellers who have returned. As a basic requirement, this tension must be
diminished in order to build the relationships necessary to improve hapū allegiance
(whānaungatanga), to build hapū strength and to maintain hapū culture and identity. As a priority, decolonising strategies that facilitate an understanding of diversity, promote
participation, maintain tikanga and include our away-dwellers, our 'returnees' and/or our
disconnected people in our hapū-marae interactions, must be considered, developed,
promoted and practiced.

text: E hoki ki to maunga: The quintessential elements of home He kopu puta tahi, he taura whiri tātou;
whiringa a nuku, whiringa a rangi, te whatia e
Issue of one womb, we are a rope woven of many strands; woven on earth, woven in heaven, it will not break (Rev Māori Marsden, 1992)
Ngati Te Takinga is a hapū (sub-tribe) belonging to the Iwi (tribe) Ngati Pikiao. An affiliated member of the Te Arawa confederation of tribes, Ngati Pikiao occupies the Okere and Rotoiti Lakes district of Rotorua in the central North Island of Aotearoa New Zealand.
This thesis seeks to acknowledge and address the concerns that Ngati Te Takinga has regarding impending cultural discontinuity. The concerns arise due to the hapū's limited human capability and capacity being the result of three things. Firstly, the ongoing demise of tribal elders (and leaders) and the subsequent loss to the hapū of cultural knowledge, skills, leadership and expertise. Secondly, the low numbers of adept,
culturally proficient successors 'coming through' (to replace the elders) and finally, the detribalised and diasporic (dispersed) nature of our people. The hapū and the marae Te Takinga (a last outwardly discernible bastion of Ngati Te Takinga cultural identity and distinction) are jeopardised as a result of these phenomenon.
This thesis is part of a hapū strategy that attempts to address these problems. Positing the
reconnection of our dispersed Ngati Te Takinga 'away-dwellers' as a beginning
solution, the central questions raised by this thesis are  how [does] Ngati Te Takinga
'home-dweller' discourse impact on the 'coming home' experiences and 'reconnection'
of Ngati Te Takinga away-dwellers?  and  what are the [are there] implications for Ngati
Te Takinga cultural continuity? 
The maintenance of Ngati Te Takinga cultural continuity forms the aho mātua or main thread of this work. Using narrative enquiry as a broad methodological framework,stories were gathered from four different groups of Ngati Te Takinga peoples. The groups were home-dwellers (mana whenua or ahi kaa), te ahi tere (away-dwellers who
have returned home to live); te ahi tere (away-dwellers who intend returning in the future) and te ahi tere (away-dwellers who have no intention of returning home to live). The stories (narratives) investigated notions of home, belongingness and Māori identity in relation to the trichotomy of the connection, disconnection and the reconnection of Ngati Te Takinga peoples; the stories were analysed and co-constructed with participants for meaning.
The stories showed that while the hapū aspires to gather up the strengths of a dispersed people to reinvigorate our culture and the marae, existing and competing discourses around authenticity, authority and Ngati Te Takinga identity create a tension between the home (mana whenua/ahi kaa) and away-dwelling Ngati Te Takinga people; including those away-dwellers who have returned. As a basic requirement, this tension must be
diminished in order to build the relationships necessary to improve hapū allegiance
(whānaungatanga), to build hapū strength and to maintain hapū culture and identity. As a priority, decolonising strategies that facilitate an understanding of diversity, promote
participation, maintain tikanga and include our away-dwellers, our 'returnees' and/or our
disconnected people in our hapū-marae interactions, must be considered, developed,
promoted and practiced.

year: 2008